: Any Previously tuned 2000 to 2003 PCM have lifetime tune upgrade



AJxtcman
02-07-11, 01:20 PM
I have new help on the 2000 to 2003 FWD Northstar PCM's and I will be doing upgraded for anyone that I have previously done a tune for.

I AM ONLY DOING REDO'S!!!!!!!!!!!!!!!!!!!!!!!!

I have no intentions to do any new customers at all!

Do some reading in this thread and you can see how I have tuned my skills.

Don't post anything untill you read the thread

http://www.monodax.com/forums/off-topic/2560-lsx-segment-templates.html

AJxtcman
02-07-11, 01:25 PM
I can do a few DTC's. I have the spark tables handled. I have the injector size table, I have the MAF table and I am picking out new tables every few hours that I am working on it. I need to get some Trans tables and Torque managment done, but I have already redone 1 for a memeber this week.

smooththg6969
02-19-11, 05:52 PM
what about the 96-99 PCMs ?

Old Skool Soldier
02-21-11, 03:10 PM
96-99 yee yee

codewize
02-22-11, 12:47 AM
Don't you people read? The 96 - 99 has been done. Go buy one.

AJ, what do you have for me? I'm up for a rework.

AJxtcman
02-22-11, 08:21 AM
Don't you people read? The 96 - 99 has been done. Go buy one.

AJ, what do you have for me? I'm up for a rework.

I have added some timing to pick up MPG. I can do this to your OE Operating System. I was using only 1 OS for all of them. I have a few other tables figure out.

weister42
02-23-11, 04:58 PM
So AJxtcman if I buy a newer 2000+ Deville and wanted to go a littler faster you're the man to talk to? Currently I have a 98 but it has 178k miles so I don't think she's gonna like performance tuning.

Submariner409
02-23-11, 06:01 PM
if I buy a newer 2000+ Deville and wanted to go a littler faster you're the man to talk to?

If that were the case, EVERYONE in here would want to talk to him.

AJxtcman
02-23-11, 07:44 PM
It would take over $1000 just for me to think about it.

I feel like I should step up for some customers that aren't 100% satisfied.

I have something going on with a major software tuning company, but for what? 10 new people? Not worth my time.

codewize
02-24-11, 12:24 AM
Well look. I still have the last PCM you did for me. I can send it back to you with your VDT. If you think you have a tune than can make me faster Ill try it. Please tell me what the changes are and let me know what to expect.

Thanks

AJxtcman
02-25-11, 08:38 AM
I have been working on increasing MPG by decreasing airflow by increasing horsepower at cruise speed. I haven't done any WOT tuning above what I had done.

codewize
02-26-11, 12:06 AM
:( OK, until next time. Can you make my Jeep get better MPG's, LOL

Old Skool Soldier
02-27-11, 06:23 PM
Code, there's alot of talk, and no action on the 96-99 PCM. Show me where I can buy one, and what they change. I am aware of westers, and we've exchanged emails. Why doesn't anyone have a tuned PCM for 96-99 if they're avaliable? "Go buy one"- Show me where.

codewize
02-27-11, 07:27 PM
Well Old Skool, I was under the impression that Westers actually had them but from what you're saying and what I experienced with Westers, I guess they're all talk too. I don't understand how so many people can say they can do something specific and never produce anything. Aren't there some law suites in order?

AJxtcman
02-27-11, 07:54 PM
Code, there's alot of talk, and no action on the 96-99 PCM. Show me where I can buy one, and what they change. I am aware of westers, and we've exchanged emails. Why doesn't anyone have a tuned PCM for 96-99 if they're avaliable? "Go buy one"- Show me where.

The deal is Wester's has tuned some. I am under the impression that the are in Old's.

The 2000 to 2003 is another story. You will see something coming out on a tuning website shortly about what I am talking about.

AJxtcman
02-27-11, 08:03 PM
This is some of the information on the parameters that I have been told that are tunable on the 96 to 99 Northstar's, but this came from a 3rd party

ECM Switch Parameters
VATS Option (X = Enabled)

ECM Constants
Low Fan On Coolant Temp.
Low Fan Off Coolant Temp.
High Fan On Coolant Temp.
High Fan Off Coolant Temp.
Min. Low Fan On Time
Warm Start Spark Adv. Enable Cool Temp
Fuel Cutoff RPM
Fuel Resume RPM
Fuel Cutoff Vehicle Speed
Fuel Resume RPM After MPH Cutoff
MAT Spark Comp. Enable Throttle Angle
Altitude Spark Enable Baro Threshold
EGR Spark Ramp-in Delay
EGR Spark Ramp-out Delay
EGR Spark Ramp-in Update Period
EGR Spark Ramp-Out Update Period
Heavy Load Spark Retard Enable MAP
Base Pulse Constant
Stoichiometric AFR
Power Enrich. Enable RPM
Low Throttle Angle P.E. Disable RPM
Low Throttle Angle P.E. Enable RPM
Low Throttle Angle P.E. Enable Throt.
Sync. A.E. Enable Delta MAP Threshold
Sync. A.E. Disable Delta MAP Threshold
Time-out AFR Decay Multiplier
Warm Start AFR Baro High/Low Threshold
Key-on Prime Pulse Disable Cool. Temp.
Maximum Allowable Open Loop AFR
Engine Cooling Enrich Enable Cool Temp.
Engine Cooling Enrichment Factor
Block Learn Low MAP Enable Threshold
Block Learn High MAP Disable Threshold
Block Learn Low RPM Enable Threshold
Block Learn High RPM Disable Threshold
BLM Step Size
BLM MAP Boundary Hysteresis
BLM RPM Boundary Hysteresis
Minimum Closed Loop BLM
Minimum Open Loop BLM
Minimum BLM - Partial CCP
Maximum Closed Loop BLM
Maximum Open Loop BLM
Decel Enlean Enable Vehicle Speed
Decel Enlean Disable Vehicle Speed
Decel Enlean Disable RPM
DFCO Enable Delay - High MPH
DFCO Enable RPM Threshold
DFCO Disable RPM Threshold
DFCO Disable MAP Threshold
DFCO High/Low Vehicle Speed Threshold
CCP Enable Coolant Temp.
CCP Enable Vehicle Speed
EGR Disable Low RPM Threshold
EGR Enable Low RPM Threshold
EGR Disable High RPM Threshold
EGR Enable High RPM Threshold
EGR Disable High MAP Threshold
EGR Enable High MAP Threshold
Baro Update Enable Throttle Angle
Part Throttle Baro Update Enable T. A.
Speed Pulses Per Mile
1 -> 2 Shift RPM
2 -> 3 Shift RPM
3 -> 4 Shift RPM

Tables
ECM Switch Table
ECM Constant Table
Main Spark Advance Vs. RPM Vs. MAP - EGR Off
Main Spark Advance Vs. RPM Vs. MAP - EGR On
Warm Start Spark Advance Vs. RPM
Warm Start Spark Altitude Multiplier Vs. Baro
Coolant Temp Spark Compensation Vs, Cool. Temp.
Cool Temp Spark Comp. Vs, Cool. Temp. at Idle
MAT Spark Advance Correction Factor Vs. MAT
MAT Spark Advance Compensation Vs. MAT at Idle
Altitude Spark Retard Vs. RPM - EGR Off
Alt. Spark Retard Multiplier Vs. Baro - EGR Off
Altitude Spark Advance Vs. RPM Vs. MAP - EGR On
Alt. Spark Retard Multiplier Vs. Baro - EGR On
Maximum Idle Spark Advance Vs. Baro - In P/N
Maximum Idle Spark Advance Vs. Baro - In Drive
Idle Under-speed Spark Vs. RPM Error - In Drive
Idle Under-speed Spark Vs. RPM Error - In P/N
Idle Over-speed Spark Vs. RPM Error - In Drive
Idle Over-speed Spark Vs. RPM Error - In P/N
Heavy Load Spark Retard Vs. RPM
Heavy Load Spark Retard Factor Vs. MAT- Low Gears
Heavy Load Spark Retard Factor Vs. MAT- High Gear
Base Pulse Compensation Vs. MAT
Volumetric Efficiency Vs. RPM Vs. MAP
EGR V.E. Correction Vs. RPM Vs. MAP
P. E. Enable Throttle Angle Vs. Baro Vs. MPH
Minimum P.E. AFR Vs. Coolant Temp.
Sync. A.E. Pulse Width Vs. MAP
Sync. A.E. MAT Correction Vs. MAT
Sync. A.E. Time-out Multiplier Vs. Coolant Temp.
Sync. A.E. Time-out Mult. Decay Step Vs. Cool Temp
Altitude Fuel Compensation at Idle Vs. Baro
BLM RPM Cell Boundaries
BLM MAP Cell Boundaries
Unfiltered O2 Rich Threshold Vs. MAP
Unfiltered O2 Lean Threshold Vs. MAP
Filtered O2 Rich Threshold Vs. MAP
Filtered O2 Lean Threshold Vs. MAP
Decel Enlean Delta MAP Multiplier Vs. Delta Map
D.E. Delta Throttle Angle Mult. Vs. Delta T. A.
P.W. Decel Enlean Multiplier Vs. Time in D.E.
Decel. Enlean Coolant Comp. Factor Vs. Cool. Temp.
Injector Offset Vs. Battery Voltage
Crank AFR Vs. Coolant Temp.
Initial Time-out AFR Vs. Coolant Temp.
Time-out AFR Decay Delay Vs. Coolant Temp.
Hot/Cold Start AFR Vs. Coolant Temp.
Time-out AFR Decay Step Period Vs. Coolant Temp.
Warm Start AFR Vs. Coolant Temp.
Hot/Cold Start AFR Correction Vs. MAP
Warm Start AFR Correction Vs. MAP - High Baro
Warm Start AFR Correction Vs. MAP - Low Baro
Cold Prime Pulse Width Vs. Cool. Temp.
Hot Prime Pulse Width Vs. Cool. Temp.
DFCO Enable Delay Vs. RPM - Low MPH
Desired Idle Speed Vs. Cool. Temp. - in P/N
Desired Idle Speed Vs. Cool. Temp. - in Gear
Minimum Desired RPM Vs Vehicle Speed
Desired Idle RPM Altitude Multiplier Vs Baro
Maximum Idle RPM Limit Vs. Coolant Temp.
P/N -> Gear Anticip. Extend Comp. Vs. Trans. Temp.
Gear -> P/N Anticip. Retract Comp. Vs Trans. Temp.
TCC Apply MPH Vs. Throttlle Angle - 3rd Gear
TCC Release MPH Vs. Throttlle Angle - 3rd Gear
TCC Apply MPH Vs. Throttlle Angle - 4th Gear
TCC Release MPH Vs. Throttlle Angle - 4th Gear
1->2 Normal Shift Vehicle Speed Vs. Throttle Angle
2->1 Normal Shift Vehicle Speed Vs. Throttle Angle
1->2 Hot Shift Vehicle Speed Vs. Throttle Angle
2->1 Hot Shift Vehicle Speed Vs. Throttle Angle
1->2 Shift Speed Correction Vs. Cool. Temp.
1->2 Shift Speed Alt. Offset Vs. Throttle Angle
1->2 Shift Speed Alt. Offset Correction Vs. Baro
1->2 Shift RPM Correction Vs. Coolant Temp.
2->3 Normal Shift Vehicle Speed Vs. Throttle Angle
3->2 Normal Shift Vehicle Speed Vs. Throttle Angle
2->3 Hot Shift Vehicle Speed Vs. Throttle Angle
3->2 Hot Shift Vehicle Speed Vs. Throttle Angle
2->3 Shift Speed Correction Vs. Cool. Temp.
2->3 Shift Speed Alt. Offset Vs. Throttle Angle
2->3 Shift Speed Alt. Offset Correction Vs. Baro
2->3 Shift RPM Correction Vs. Coolant Temp.
3->4 Normal Shift Vehicle Speed Vs. Throttle Angle
4->3 Normal Shift Vehicle Speed Vs. Throttle Angle
4->3 Hot Shift Vehicle Speed Vs. Throttle Angle
3->4 Hot Shift Vehicle Speed Vs. Throttle Angle
3->4 Shift Speed Alt. Offset Vs. Throttle Angle
3->4 Shift Speed Alt. Offset Correction Vs. Baro

Submariner409
02-27-11, 08:14 PM
old Navy axiom: "If you can't fill 'em with facts, baffle 'em with bullcrap".

AJxtcman
02-27-11, 10:16 PM
old Navy axiom: "If you can't fill 'em with facts, baffle 'em with bullcrap".

I will change the speed limiter, Spark Tables and recurve the MAF x-fer if needed on an of the 2000 to 2003 that I have tuned before.

AJxtcman
02-27-11, 10:49 PM
I will post a picture of any adjustment I make and even a comparison of the before and after ADJUSTMENTS :thumbsup:

The pictures will be of the 3D tables.

I can do the injector scalling also.

I can only properly about 10 parameters.

codewize
03-06-11, 11:11 PM
AJ, send me your address again and I'll send you the last PCM you did for me. If you like you can re-tune it, tell me what to expect and I'll take for a spin.

OK?

AJxtcman
03-07-11, 08:15 PM
ineresting link
http://www.pcmcalibrators.com/

miwise
03-29-11, 02:10 PM
Hey. How much would u charge to revin a PCM and remove speed limits? U can pm me if u want. I'm wanting to put a 2002 Sts powertrain in my 99.

AJxtcman
04-19-11, 01:23 PM
Edwin & Codewize your PCM's will go out in a few days and as I promised I will post the changes I made.

ejguillot
04-19-11, 05:14 PM
Thanks AJ!

codewize
04-28-11, 01:39 AM
Thanks AJ. Please tell us what to expect from the changes. Sorry, I haven't been on in a few days.

pcmcalibrators
05-09-11, 10:39 PM
I am having issue programming these now. I can't remember how I was doing it. I got the custom tunes in the PCM's, but now I have P0601 DTC's. I think I need to pull the chips and program them off the board. We do it all the time on LS1 PCM that are locked.
Sorry about the delay

Submariner409
05-10-11, 06:44 PM
For the 2000 - 2003 PCM's, don't you mean "unsolder the chip(s)" and program........... Aren't this series of IC's hard soldered to the boards ?

codewize
05-11-11, 03:52 PM
That's not how they were being done.

codewize
05-16-11, 11:55 PM
And the verdict is ?

pcmcalibrators
05-17-11, 08:51 AM
A.J. will be in contact shortly to give you an update.

codewize
06-06-11, 12:36 AM
Any words? Is AJ OK?

AJxtcman
06-06-11, 07:58 AM
Good news Codewize. Ross at EFILive gave me a helping hand and John at Tunercat has also. The Tunercat programming cable will now program this PCM per John. We can't read out the PCM yet, but that doesn't matter to me I pull the chips. With the info I got from Ross we should have the other issue resolved. TunerCat and Wester's are very similar and I use a file from TunerCat in the Wester's program to make it work. The problem this weekend was I left my cable at work. We will give it a try tonight.

auroradude
06-07-11, 03:23 AM
Hey AJ I was hoping you could help me real quick. Have you heard of NYC Performance Tuning? They claim to be associated with Westers Garage which is a name i've heard going around for years. I just bought a brand new Shelby Aurora V8 and wanted to put that in my car and have my '95 computer tuned to handle it. I'd rather have you do it. Are you sure you won't do any new tunes?

codewize
06-26-11, 01:20 PM
What's the good word folks?

Submariner409
06-26-11, 05:30 PM
That word is: "Don't hold your breath". Been the same since 2005, hasn't it ?

AJxtcman
06-26-11, 05:36 PM
TunerCat can now program this PCM, so it isn't the same.

I also have made a huge step in the 2004 and 2005 PCM, but I am stuck on the F'ing DTC that keeps setting for the issue on the 2000 to 2003.

AJxtcman
06-26-11, 05:38 PM
Code and Edwin I will get the MPG out to you soon.
I found a calulator that will do hex.

AJxtcman
06-26-11, 05:43 PM
This PCM is a Seimens and not a Delco/Delphi. The Seimens PCM's are used in a lot of European cars. I have a friend that uses WinOLS (a Seimens friendly software) and I am hoping he can aid in fixing my issue. I sent him a bin file last week to see if his copy of WinOLS could calculate the check sum

Submariner409
06-26-11, 06:12 PM
AJ, My 2002.5 PCM is a Siemens.

ejguillot
06-29-11, 01:18 AM
Cool, keep us posted.

pcmcalibrators
07-01-11, 05:08 PM
Thanks Edwin for the call
I had a look and found a place to start looking for that issue

http://i1106.photobucket.com/albums/h361/PCMCalibrator/Hex%20Work/Cadillac%20503/5172.jpg

See the 000075C4 in the second line below and listed above as the CVN?
http://i1106.photobucket.com/albums/h361/PCMCalibrator/Hex%20Work/Cadillac%20503/517.jpg

http://i1106.photobucket.com/albums/h361/PCMCalibrator/Hex%20Work/Cadillac%20503/4242.jpg

And then the CVN from above listed in the second line below?
http://i1106.photobucket.com/albums/h361/PCMCalibrator/Hex%20Work/Cadillac%20503/424.jpg

Thanks again Edwin
I hope this is it

I will email Mr Wright and as for any help he will give me on this

codewize
07-10-11, 12:44 PM
AJ, My 2002.5 PCM is a Siemens.
I wouldn't swear to it but I think my 2001 is also.

But Sub, one thing is for sure. It is in fact the same since 2005.

pcmcalibrators
07-19-11, 11:17 PM
Thanks Code I got a good start on it and now I can get back to your PCM

www.pcmcalibrators.com

Submariner409
07-19-11, 11:45 PM
pcmcalibrators,.........Exactly what modifications do you offer for the 1999 - 2003 Cadillac FWD PCM ? What gains, what losses.......... dyno graphs: before and after. Shift points, engine loads, downshifts, injector timing, ignition timing........all with load/throttle position graphs.

What is/will my money get me with your work ?? Guaranteed in writing.

AJxtcman
07-20-11, 08:09 PM
pcmcalibrators,.........Exactly what modifications do you offer for the 1999 - 2003 Cadillac FWD PCM ? What gains, what losses.......... dyno graphs: before and after. Shift points, engine loads, downshifts, injector timing, ignition timing........all with load/throttle position graphs.

What is/will my money get me with your work ?? Guaranteed in writing.
Previously tuned Northstar PCM ONLY

Submariner409
07-21-11, 08:32 AM
"Previously tuned only".....................So "pcmcalibrators" is a CF authorized vendor offering services in a public forum but doing work for only a select few ?? Why does their site lead one to believe that "they" will perform work on ALL 2000 - 2003 Northstar FWD PCMs ?

I notice that one of CF's members, N0D1H, is part of this ^^^ crew.

AJ, how come any CF member can't obtain this service if they want to pay for it ?? What's the mystery ??

drewsdeville
07-21-11, 09:23 AM
Stop thinking so hard about it, you might break something.

Submariner409
07-21-11, 10:54 AM
Stop thinking so hard about it, you might break something.

Not possible: It's already broken !

Fishing for a piece of the action..................

pcmcalibrators
07-21-11, 01:14 PM
Hey Sub I am getting my memory back slowly. I have made a huge jump in progress in getting the CheckSum figured out. John has been a big help. ejguillot really is the one that got me back on track. Then with John's help I got the location of the checksum. Now all I am working on is a very small part of both High Octane and the Low Octane Spark Tables. If I raise the timing just at cruise you should have less airflow. The Mass Airflow sensor measures the Mass of the air flowing into the engine the PCM then sprays the injectors off of the MAF reading.
Example: Towing a boat at 65 mph at 2200 RPM’s at 18% throttle and 46 G/sec of air
Remove the boat -- 65 mph at 2200 rpm’s at 11% throttle, but only 15 G/sec you will have less fuel flowing to the engine

I would also like to lower the amount of EGR at this area and this area only.

This is MAP by RPM
http://i1106.photobucket.com/albums/h361/PCMCalibrator/Data-Logs/2003%20Northstars/2003Northstar.jpg

pcmcalibrators
07-21-11, 04:46 PM
"Previously tuned only".....................So "pcmcalibrators" is a CF authorized vendor offering services in a public forum but doing work for only a select few ?? Why does their site lead one to believe that "they" will perform work on ALL 2000 - 2003 Northstar FWD PCMs ?

I notice that one of CF's members, N0D1H, is part of this ^^^ crew.

AJ, how come any CF member can't obtain this service if they want to pay for it ?? What's the mystery ??
I see nothing on the site about Northstar Tuning

Submariner409
07-21-11, 11:05 PM
I see nothing on the site about Northstar Tuning

BINGO !!! So, in order to set the fish hook, exactly why are you posting a so-called "tune" for "GM engines" in a primarily FWD Northstar thread ???? From your statement in writing ^^^ you are a phony = fraud...........Go post in the old Forums or lure the new model owners - if you can't do squat for a 2000 - 2004 FWD Northstar PCM, then stop throwing smoke and mirrors into the mix.

Bottom line: Can you or your "company" modify the existing GM factory settings in a 2000-2004 FWD Northstar PCM for a positive, documented, guaranteed power/economy/performance gain ???...............for any owner.

drewsdeville
07-21-11, 11:24 PM
http://www.healthyshare.info/wp-content/uploads/2011/01/senile-300x267.jpg

pcmcalibrators
07-22-11, 10:29 AM
I see nothing on the site about Northstar Tuning

BINGO !!! So, in order to set the fish hook, exactly why are you posting a so-called "tune" for "GM engines" in a primarily FWD Northstar thread ???? From your statement in writing ^^^ you are a phony = fraud...........Go post in the old Forums or lure the new model owners - if you can't do squat for a 2000 - 2004 FWD Northstar PCM, then stop throwing smoke and mirrors into the mix.

Bottom line: Can you or your "company" modify the existing GM factory settings in a 2000-2004 FWD Northstar PCM for a positive, documented, guaranteed power/economy/performance gain ???...............for any owner.

We will see shortly.
As far as the 2004 YES

Submariner409
07-22-11, 01:07 PM
We will see shortly.

Good !!! That's the brightest ray of sunshine on the whole 2000-2003 Northstar FWD PCM "tuning progress" in 5 years. Thanks.

pcmcalibrators
07-22-11, 08:57 PM
We tune a minimum of 3 cars a week and over the last year I would have to guess it is about 5 to 10 a week. We have learned a lot over the last 5 years and it shows. Customer Satisfaction is our #1 attraction. We make sure we are doing the correct service and we make sure it is done 100% correct. I have repaired 1 guys PCM 2 times for 1 price just to make sure they are 100% happy with our service. It is very easy to increase HP and MPG. The thing is you need a little help from ?M.
Yes ?M has been helping tuning companies for years. Think about the big picture. You have to have a brand that the owner can make their own.

stngh8r
07-25-11, 02:33 PM
AJxtcman: Thanks for hanging in there. I have noticed you over on a "tuner" forum and I know you are passionate about tuning. Please stick with it. It seems that it has been a long and thankless adventure for you with less than desired results. So I just want to say thanks.

pcmcalibrators: Thanks for jumping in on this

Sub: Bless your heart. You may be the most positive and uplifting gentleman for miles around, but your post reflect the contrary.


Eric

Submariner409
07-25-11, 04:15 PM
Sub: Bless your heart. You may be the most positive and uplifting gentleman for miles around, but your post reflect the contrary.

I will kiss no one's butt for praise: I have been watching the 2000-2003 PCM "tuning" promises from 4 different sources for too long - now it's down to "Show me !" When it comes to this segment of FWD Northstar ownership I am a dyed in the wool skeptic. Too many smoke and mirrors threads over too many years.

stngh8r
07-26-11, 02:08 PM
When it comes to this segment of FWD Northstar ownership I am a dyed in the wool skeptic. Too many smoke and mirrors threads over too many years.

I understand. I'm sorry, I was a bit harsh with you.

I suppose from my perspective, I just want to give these guys some moral support and encouragement. They have spent alot of energy and time trying to gain some ground for this very small special interest group.

Eric

Submariner409
07-26-11, 04:37 PM
Not harsh at all...........I welcome your input - that's why CF is such a great place to communicate. Understand: I spent 25 years in a profession that did not allow one second's guesswork and rumor - it was all done by the book, through practice, and the passing down of extensive experience. One screwup and you might kill a LOT of people. I try not to parrot rumor and hearsay, and am not influenced by it. A lot of today's individuals cannot handle the blunt truth: I thrive on it, which is why I have nothing but the greatest admiration for JimD. He tells it like it is, while my prose style is somewhat different. Many need their learning experiences sugar coated.

pcmcalibrators
07-27-11, 01:40 PM
If every GM car and truck has a major pick up in performance why would you think that a Northstar would not Sub? Thinking that would be 100% ignorance.

Why aren’t the Northstar OBD 1 ECM’s not supported by tuning companies? They use multiple “Templates” for most years and that is an issue.

Why aren’t the 96 to 99 Northstar PCM’s supported by all tuning companies? First thing is The Reading and Writing of the PCM’s. They use a 128kb file size and most other GM’s vehicles from 96 to 2002 use a 512kb. Next the Northstar’s use 2 Motorola processors and they are a different type then the other Delco PCM’s. Tunercat has the ability to read a 128kb PCM that is use in 1996 & 97 GMT-400 trucks. Now you need the Seed & Key combo. Most GM vehicles from 1996 on up use a single Intel memory chip that you can pull and get the Seed & Key combo from the Northstar does not. The 96 to 99 uses 4 small chips, but so does a few other older PCM’s like the GMT-400. Next would be mapping out the PCM. That isn’t that big of a deal. It takes time, but it can be done.

The 2000 to 2003 use a 1 Intel chip PCM. It is a seamen’s PCM with 2 Infineon processors. This is an issue in reading the PCM. We can program it, but not read it out. Do we really need to read it out. Not really we just pull the memory chip and read the chip on the off board reader. So now moving on to the mapping of the calibration. I use a Euro software program that is Siemen’s friendly, but it doesn’t do the checksum. I can spot the timing tables in a bin file pretty easy. I just adjust them and then burn the calibration back into the chip while it is on the off board burner.

Do I have all 4000 parameters figured out? No!
HPT sells a tuning tool with about 100 parameter out of the 4000 and people buy it. So I have a handful mapped out and tested.

Submariner409
07-27-11, 04:30 PM
I have NEVER posted or even speculated that a FWD 2000 - 2004 Northstar engine could not benefit from a good PCM "tune". (My own experience with the STS says it would benefit from a few tweaks). I HAVE questioned anyone's ability to date to perform such a "tune". All of the accompanying gobbledygook on OBD-1, 128 mb, blah, blah is merely more smoke and mirrors.

The title of this thread is the year group in question, not OBD-1 and not '96 - '99.

codewize
08-03-11, 09:12 PM
I'm just chilling out waiting to go faster. Lots of time, lots of cash, lost of trips to the track, no progress.

I will say however my car looks damn good :)

pcmcalibrators
08-04-11, 12:58 PM
Working on it Code. I just have too much going on.

pcmcalibrators
08-04-11, 12:58 PM
I was able to post something in less than 30 seconds :halo:

pcmcalibrators
09-16-11, 08:46 AM
Picture day today :sneaky:

Edwin will have the first one out and we will see if he is happy. Then Code will get his. :D

I still have my hair, but it was a stressful few weeks

pcmcalibrators
09-16-11, 01:00 PM
OK sub
This is what a 2005 Chevy Truck High Octane Table looks like. The reason I am posting it is for the reference to RPM, Cylider Volume, and spark timing in
http://i1106.photobucket.com/albums/h361/PCMCalibrator/Tuning%20Tables/Northstar/TunerPro/11.jpg

This is a timing table that was in Edwin's OE calibration
http://i1106.photobucket.com/albums/h361/PCMCalibrator/Tuning%20Tables/Northstar/TunerPro/06792.jpg

This is Edwin's new timing table I placed in Edwin's OE calibration
http://i1106.photobucket.com/albums/h361/PCMCalibrator/Tuning%20Tables/Northstar/TunerPro/644Y2.jpg

codewize
09-17-11, 09:50 PM
AJ, the best thing you could do for me right now is a new button with a longer wire and a micro toggle rather than a momentary contact push button.

pcmcalibrators
09-17-11, 09:53 PM
I can send a new switch when I send out the PCM. 2 feet longer?

codewize
09-18-11, 01:03 PM
I can send a new switch when I send out the PCM. 2 feet longer?
At least 2 feet. The old one barely reached to the seatbelt buckle. I'd like to be up into the empty console space so maybe even 3 feet more?

Drives me nuts. Every time I take the car to the shop, they move the seat back and the switch gets pulled back and under the seat.

Thanks

Submariner409
09-18-11, 02:54 PM
Code, Which car did you install the brake switch bypass circuit into ?

AJ, Code...........Will there be before and after dyno pulls and before and after timeslips (all runs done under the same conditions) ?

...........and, has anyone done the four wheel speed sensor bypass modification ??

pcmcalibrators
09-18-11, 03:09 PM
Considering I have repeatedly said that I am working on MPG by increasing HP at cruise speed I can't see how a WOT Dyno pull will show the increase of HP at cruise.

If Edwin would like to waste his money and find a high dollar dyno that will measure HP and torque at a steady state I am all for it, but I wouldn't waste my money.

If you look at the spark tables you can see that I have increased the timing at cruise.

Submariner409
09-18-11, 04:52 PM
OK - my misunderstanding. From your post this tuning work is not for performance (overall horsepower/torque gain), it's for highway economy. It will be interesting to see the fuel savings realized.

It takes the exact same horsepower applied to the road to move a given vehicle at a given steady speed on a flat road surface, regardless of the engine, tune, whatever. If you "increase horsepower at cruise" by advancing timing, then in order to maintain the same cruise speed the throttle blade should not be open as far as before the "tune", resulting in a fuel savings, but that could all be measured dynamically.........and this begs the question: If an economy savings is achievable with a relatively simple cruise ignition timing trim, why didn't Cadillac do it from the start ? Rhetorical question: AJ - why didn't the engineers do it in the first place, especially when, in the late 90's and 2000's every automaker was scratching for CAFE ratings ?

No way around it: In order to extract more "performance" power from a given engine you need to intake, burn and exhaust more fuel.

pcmcalibrators
09-18-11, 05:45 PM
OK - my misunderstanding. From your post this tuning work is not for performance (overall horsepower/torque gain), it's for highway economy. It will be interesting to see the fuel savings realized.

It takes the exact same horsepower applied to the road to move a given vehicle at a given steady speed on a flat road surface, regardless of the engine, tune, whatever. If you "increase horsepower at cruise" by advancing timing, then in order to maintain the same cruise speed the throttle blade should not be open as far as before the "tune", resulting in a fuel savings, but that could all be measured dynamically.........and this begs the question: If an economy savings is achievable with a relatively simple cruise ignition timing trim, why didn't Cadillac do it from the start ? Rhetorical question: AJ - why didn't the engineers do it in the first place, especially when, in the late 90's and 2000's every automaker was scratching for CAFE ratings ?

No way around it: In order to extract more "performance" power from a given engine you need to intake, burn and exhaust more fuel.

Thats funny

GM take in consideration for bad gas and good gas. Most GM calibrations have a Good Gas aka High Octane spark timing table and a Bad Gas aka Low Octane table. The Northstar has a few Base spark tables and adder tables like other calibrations have also, but the Northstar's others also

Back to the funny part
Are all of the Main/Important spark tables the same in all of the 2000 to 2003? NO!
I can tell you that all of the 275hp Y engines use the exact same main spark tables and all of the 300hp 9's except 1 of the spark tables in 1 special calibration run the exact same tables. So all of the Y's match and all of the 9's match with the exception of the 1. The Y's and the 9's don't match each other

Well we know the 275hp have more torque below 5000. If I look at the the max amount in both the 9's and the Y's at 1000 to 2000 RPM's at 200 to 400mg/cyl. Then transfer that over to use in a new table and then smooth out the new tables. Then I would say the tune will be safe

pcmcalibrators
09-18-11, 06:02 PM
This goes to the LS1 table I posted
http://i1106.photobucket.com/albums/h361/PCMCalibrator/Tuning%20Tables/Northstar/TunerPro/LS1.jpg

These are portions of the timing tables for an OE Northstar Calibration. They come from the same calibration and they are not the high and low octane tables
http://i1106.photobucket.com/albums/h361/PCMCalibrator/Tuning%20Tables/Northstar/TunerPro/Northstar1.jpg
http://i1106.photobucket.com/albums/h361/PCMCalibrator/Tuning%20Tables/Northstar/TunerPro/Northstar2.jpg

codewize
09-19-11, 11:49 AM
Code, Which car did you install the brake switch bypass circuit into ?

AJ, Code...........Will there be before and after dyno pulls and before and after timeslips (all runs done under the same conditions) ?

...........and, has anyone done the four wheel speed sensor bypass modification ??

This is in the 01. Been installed for a while. It works. I never made it back to the dyno because of the 4 wheel speed thing. I believe I'll still have trouble on the dyno and I don't want to waste my money.

My runs without using the button are usually .1 to .2 slower. I do get some wheel spin but not enough to loose time. Shes still digging in pretty hard. Without the button the engine just rolls over until it gains traction costing a few tenths.

pcmcalibrators
09-28-11, 07:49 PM
Thanks AJ!any thing?

ejguillot
10-04-11, 03:07 PM
Installed the PCM.

Positives: No codes set, TCC lockup is kicking in earlier. Part throttle acceleration feels a bit more brisk, and preliminary results show at least a 1MPG average increase, or over 5%. (from 18.2 average to about 19.2 average, combined city and highway.) Haven't tried a full on WOT run yet.
Negatives: None.

Submariner409
10-04-11, 07:22 PM
The candle at the end of the tunnel has become a flashlight..................

AJxtcman
10-04-11, 07:33 PM
Installed the PCM.

Positives: No codes set, TCC lockup is kicking in earlier. Part throttle acceleration feels a bit more brisk, and preliminary results show at least a 1MPG average increase, or over 5%. (from 18.2 average to about 19.2 average, combined city and highway.) Haven't tried a full on WOT run yet.
Negatives: None.

18.2 + 5% increase = 19.2 mpg
18.2 + 10% increase = 20 mpg
18.2 + 20% increase = 22 mpg for your setup and that was my target number for you

umm this was an increase for highway speed.
5% with your stall converter that would make sence for overall increase

codewize
11-24-11, 10:31 AM
What happened here?

pcmcalibrators
11-24-11, 10:36 AM
Edwin picked up only 1 mpg, but he has a stall converter. I am working to get more out of the tune. I am hoping to get it figured out within a week or so. I just talked to Edwin a few days a go and sent an email out that day to my helper. I have not hear back from my helper

pcmcalibrators
11-24-11, 10:38 AM
Hey Code PM Edwin and see what he thinks about the tune that he has.

I have a plan to get more out of it with just 1 setting.

codewize
01-10-12, 01:01 AM
AJ, what's happening with that PCM I sent back to you? Ad can I get that new button?

pcmcalibrators
01-10-12, 08:14 AM
I have been waiting for some help.

codewize
01-13-12, 09:52 PM
Ahh OK. All I really want i my stock program less the speed limiter, and a new longer button

AJxtcman
01-14-12, 06:47 PM
Can you send me the current switch. I have no idea how I made them.

codewize
01-15-12, 04:37 PM
AJ, you really had a memory problem didn't you. That's not good since you're the sole provider of some of our goodies

Submariner409
01-15-12, 05:12 PM
It would appear that the brake signal bypass could be wired anywhere with any switch you desire.............

pcmcalibrators
01-16-12, 08:15 PM
I have those parts in stock. I will get the built for you

codewize
01-16-12, 11:43 PM
I don't remember what I said for length but it needs to be about 4 feet longer than the one I have and I'd like a mini toggle rather than a momentary contact push button.

AJxtcman
01-26-12, 06:00 PM
I am working on it

codewize
03-03-12, 05:23 PM
Yo. Bump.

pcmcalibrators
03-03-12, 05:44 PM
Sorry for no update code. You won't need any switch. I am working on a new tune for you.

codewize
03-04-12, 02:51 AM
Awesome, all I really want is no speed limiter and the torque management defeat.

AJxtcman
07-01-13, 10:54 PM
How did it work for you