| Cadillac Powertrain Control Module (PCM) Tuning Ask questions - Get answers in our section for discussions regarding Cadillac PCM tuning for engines such as the LT1, LS6, L92, LQ9, LQ4, L03 (TBI 305), L05 (TBI 350) and more... | Cadillac Forums: Northstar Tuning 
05-10-07, 12:51 PM
| | Cadillac Owners Connoisseur Cadillac(s): Member of Air Fuel Tuning (Cadillac Division) | | Join Date: Apr 2007 Location: Inside The Northstar PCM Age: 41 | | | Re: Northstar Tuning [quote=mike0580a;1078561]I so want to see this done, but it's not a simple process.
QUOTE]
Read this thread FROM THE START. | 
05-10-07, 01:09 PM
| | Cadillac Owners Connoisseur | | Join Date: Feb 2004 Location: FL | | | Re: Northstar Tuning Quote:
Originally Posted by mike0580a |
This isn't "tuning" as HP tuners would define it.
This is reprogramming a factory computer with another factory calibration that would not have been loaded unless your car was being exported to Germany (for instance). If you're on the autobahn you don't want a speed limiter kicking in at 110mph
TUNING is changing the AFR, spark timing, shift points... a lot of things that won't happen here. | 
05-10-07, 01:20 PM
| | Cadillac Owners Member Cadillac(s): 99 SLS | | Join Date: Dec 2006 Location: San Diego, CA Age: 37 | | | Re: Northstar Tuning [quote=AJxtcman;1078579] Quote:
Originally Posted by mike0580a I so want to see this done, but it's not a simple process.
Read this thread FROM THE START. | I did. I want the finished product (just like everyone else  ). I'm in your cheering section. I'm about $700 in to HP Tuners right now and they outright swore off the N*. I want the GUI and all.
Most GM engines have rev limiters as well as speed limiters. You may be hitting peak RPM vice peak allowed speed. TC (usually) works on revs, not speed. Hit a set rev limit and spark is retarded.
Here's a vin for you, 99 SLS.
1G6KS54Y8XU929360
Mike | 
05-10-07, 02:31 PM
| | Cadillac Owners Connoisseur Cadillac(s): Member of Air Fuel Tuning (Cadillac Division) | | Join Date: Apr 2007 Location: Inside The Northstar PCM Age: 41 | | | Re: Northstar Tuning Now the problem is Code deffinitions. THAT IS WHAT I AM WORKING ON. You will not have a different VIN or You may get a different VIN. This is an example
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Identifying Duramax Diesel Aftermarket Power-Up Devices TSB #06-06-01-007
Installed Power-Up Kit
Aftermarket power-up kits have become a very popular add on for performance-minded customers. These devices can add horsepower and torque and can add additional stress to the engine. These aftermarket calibrations take the Duramax™ powertrain outside of its design torque and horsepower rating. They do this by altering air/fuel ratios and injector timing, resulting in excessive cylinder pressure and temperature. When these calibrated parameters are altered, it will upset the design balance and can lead to a reduction of engine life expectancy. Generally, in inspection of Duramax™ engine failure due to power-up failures, two or more cylinders will be affected.
Installed Power-Up Kit
• Once installed, the calibration may mask itself with the factory original calibration ID and may remain the same.
• A Tech 2® will not positively enable you to identify the use of a power up device.
• Some companies that offer power-up devices claim increases of 150 or more horsepower and 300 or more lb/ft pounds of torque.
• A vehicle that is used to the power-up device potential 100% of the time will see earlier engine wear and breakdown.
• A vehicle that takes advantage of additional power, but on a less frequent basis, may not see premature engine wear and breakdown until later in the engine's life.
• A vehicle not pushed to its limits of the power-up device often may not encounter premature wear and breakdown until after the engine is out of warranty
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. If I look at several Calibrations in this software for long enough I will see a blur. Just joking I see differences between Y and 9 Vin's, S rated tire, H rated tires, W rated tire, AIR with or without, Dual AIR pumps, with or without Catalyst. You can follow me know? | 
05-10-07, 02:36 PM
| | Cadillac Owners Connoisseur Cadillac(s): Member of Air Fuel Tuning (Cadillac Division) | | Join Date: Apr 2007 Location: Inside The Northstar PCM Age: 41 | | | Re: Northstar Tuning The sad thing is that Northstar Protocols are all by themselve. 4.0L are even different. | 
05-10-07, 03:20 PM
| | Cadillac Owners Connoisseur | | Join Date: Feb 2004 Location: FL | | | Re: Northstar Tuning A diesel is not a gasoline engine. If you think you can get 150 "extra" horsepower out of a northstar, I've got some beachfront realestate to sell you in Nevada. (I'll sell it cheap, because I've got connections.) | 
05-10-07, 04:27 PM
|  | Cadillac Owners Master Cadillac(s): 1989 STS / 2001 DTS / 2002 DTS | | Join Date: Apr 2005 Location: Upstate NY | | | Re: Northstar Tuning I don't really care if we call it tuning, tweaking, breaking, hacking or what have you. If it works and we gain something without compromising the car, we have won the battle.
I lost track of all this. Where do we stand. The last I knew we were waiting for another PCM to show up and would be shipped to CadillacETC1997.
EDIT : OK I'm caught up now
__________________ Ownership:
89 STS (1 of 1893) - FOR SALE
02 Blue Onyx DTS 01 DTS: Custom installed Volant CAI Custom PCM Body color engine components Cruiser Alloy wheels EBC brakes Eibach springs
Corsa exhaust Sportwing Spoiler Semi-custom interior Custom quad Hi-Beams Future Plans: More interior work. Memberships: National and regional Cadillac & LaSalle Club Proud Volunteer - Northstar Tuning Project ----------------------------
Last edited by codewize; 05-10-07 at 04:34 PM.
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05-10-07, 04:39 PM
| | Cadillac Owners Connoisseur Cadillac(s): Member of Air Fuel Tuning (Cadillac Division) | | Join Date: Apr 2007 Location: Inside The Northstar PCM Age: 41 | | | Re: Northstar Tuning Yes I need a PCM | 
05-10-07, 04:41 PM
| | Cadillac Owners Connoisseur Cadillac(s): Member of Air Fuel Tuning (Cadillac Division) | | Join Date: Apr 2007 Location: Inside The Northstar PCM Age: 41 | | | Re: Northstar Tuning Quote:
Originally Posted by eldorado1 A diesel is not a gasoline engine. If you think you can get 150 "extra" horsepower out of a northstar, I've got some beachfront realestate to sell you in Nevada. (I'll sell it cheap, because I've got connections.) | This is from a GM TSB. The point I was trying to make is that the STOCK VIN and CAL ID can stay the same! This is used to MASK the custom Calibration! | 
05-10-07, 04:44 PM
| | Cadillac Owners Connoisseur Cadillac(s): Member of Air Fuel Tuning (Cadillac Division) | | Join Date: Apr 2007 Location: Inside The Northstar PCM Age: 41 | | | Re: Northstar Tuning Quote:
Originally Posted by AJxtcman Now the problem is Code deffinitions. THAT IS WHAT I AM WORKING ON. You will not have a different VIN or You may get a different VIN. This is an example
.. Identifying Duramax Diesel Aftermarket Power-Up Devices TSB #06-06-01-007 [/size] | SEE The highlight | 
05-10-07, 05:20 PM
|  | Cadillac Owners Connoisseur Cadillac(s): 1996 Eldorado Sport Coupe | | Join Date: Jul 2005 Location: Chicago | | | Re: Northstar Tuning AJxtcman, keep up the good work. I'm with you. If the other tuner guys read this thread they might get some kind of vibe that there's a market for the N*. As you can see everyone is excited so keep that in mind when reading comments. | 
05-10-07, 06:25 PM
| | Cadillac Owners Connoisseur | | Join Date: Feb 2004 Location: FL | | | Re: Northstar Tuning Quote:
Originally Posted by codewize I don't really care if we call it tuning, tweaking, breaking, hacking or what have you. If it works and we gain something without compromising the car, we have won the battle. | Make friends with a cadillac tech and tell them to reprogram your vehicle with a german export calibration. Voila, no speed limiter.
I wouldn't call that "winning" because you still can't tune for cams, or exhaust, or custom intake manifolds, etc... See what I mean? It's not tuning if a dealership can do it, and it uses factory programming. HP Tuners, etc modifies the factory program to change the air fuel ratio, spark timing, revlimiter, etc etc. | 
05-10-07, 06:28 PM
| | Cadillac Owners Connoisseur | | Join Date: Feb 2004 Location: FL | | | Re: Northstar Tuning Quote:
Originally Posted by AJxtcman This is from a GM TSB. The point I was trying to make is that the STOCK VIN and CAL ID can stay the same! This is used to MASK the custom Calibration! | your point must have flown completely over my head. I still don't understand the significance. Are you saying there's some 96 STS with 400hp from a performance tune out there that reads as a stock calibration? | 
05-10-07, 09:03 PM
| | Cadillac Owners Connoisseur Cadillac(s): Member of Air Fuel Tuning (Cadillac Division) | | Join Date: Apr 2007 Location: Inside The Northstar PCM Age: 41 | | | Re: Northstar Tuning Quote:
Originally Posted by eldorado1 Make friends with a cadillac tech and tell them to reprogram your vehicle with a german export calibration. Voila, no speed limiter.
I wouldn't call that "winning" because you still can't tune for cams, or exhaust, or custom intake manifolds, etc... See what I mean? It's not tuning if a dealership can do it, and it uses factory programming. HP Tuners, etc modifies the factory program to change the air fuel ratio, spark timing, revlimiter, etc etc. | YOU ARE COMPLETLY INCORRECT!!!!!!!!!
First: some German cars have V rated tire and will not go 140 MPH!!!!
Second: What the f*** is the only Mechanical difference between the 9 and Y!
............ THE CAMS. That would be tuning for cams from the factory!
If I can see the difference between the Y and 9 Then why can't I go Further?
I do not know of one Dealership that has the Program that I am using!!!!!!!!!!!
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. Now for the Duramax.
I see a lot of Duramax's with altered programs or add on programmers.
After a few tuner customers blew motors the aftermarket Guy's got very smart. In the past even back in the 80's the aftermarket programmers proms or programs could be identified very easily. If your car broke. then manufacturer could say they would not cover the repair. A Duramax installed may cost 10k out of pocket!
ARE YOU FOLLOWING ME
Now the aftermarket programing companies are reusing the factory Calibration ID's and VIN's. This is to trick the dealers or the Manufactures so they will have to repair the damaged part.
DID YOU FOLLOW THAT
THIS HAS NOTHING TO DO WITH HORSEPOWER.
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THIS STATEMENT AND THE DURAMAX INFORMATION I HAD LISTED WAS JUST INFORMATION ABOUT CAL ID'S AND VIN'S USED TO KEEP YOUR F****** WARANTY!!!!!!!!! | 
05-10-07, 09:32 PM
| | Cadillac Owners Connoisseur Cadillac(s): Member of Air Fuel Tuning (Cadillac Division) | | Join Date: Apr 2007 Location: Inside The Northstar PCM Age: 41 | | | Re: Northstar Tuning 2003 VIN 9 W rated tires ALL FOR KY CARS
I CAN NOT LIST THE VIN's
Country.........Cal ID's
GERMANY .............12585514
USA........12585503
JAPANESE..........................12585515
KOREA.................12585514
TAIWAN.........................................125 85510
JAPANESE..........................12585515
GERMANY ............12585514
GERMANY ............12585514
USA.......12585503
USA.......12585503
USA.......12585503
USA.......12585503
USA.......12585503
USA.......12585503
USA.......12585503
USA.......12585503
USA.......12585554 This would be VIN 1G6KY54953U227322
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2000 VIN Y QLD (235/60R17/X WS1 R/PE ST TL ALS)
CAL ID's
12585589
12585589
12585589
2000 VIN 9 QDC - TIRES-GOODYEAR EAGLE LS P235/60ZR16
Country ..... CAL ID's
USA 12585569
2000 KY VIN Y QDC - TIRES - P235/60ZR-16"ALL SEASON PERFORMANCE TIRES
Quebec 12585575
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99 KY VIN 9
Tires .............. Cal ID's
QDC 9388186
QDC 9388186
QDC 9388186
QDC 9388186
QDC 9388186
QDO 9364466
QDC 9388186
QDC 9388186
QDC 9388186
QDO 9364466
QDC 9388186
QDC 9388186
QDC 9388186
QDC 9388186
QDC 9388186
QDC 9388186
QDC 9388186 99 KS VIN 9
Tires......... Cal Id's
1G6KS54Y8XU------ QDO 9364456 Yes this is a 150MPH VIN Y
Now I over lay this ontop of a V rated tire and then I know thw code for the tire.
I can also take this and over lay it so I can see the differences in the cam programs between a VIN 9 and Y.
..
. Quick questions
Who built the program that is used in the LS1 packages?
GM or did GM outsource it?
The aftermarket Programs just alter it correct?
They don't start from scratch correct?
CAN YOU FOLLOW ME.
I have so many more ID's just list and list
Last edited by AJxtcman; 05-10-07 at 09:47 PM.
Reason: more than one question.
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