Northstar Tuning

[AJxtcman]

I have the ability to Recalibrate Northstar PCM's. I am working on unlocking more functions and a program to let people do it with a laptop.

[Coreyned]

PCM exactly is?

[Ranger]

PCM = Powertrain Control Module

[clarkz71]

Originally Posted by AJxtcman

I have the ability to Recalibrate Northstar PCM's. I am working on unlocking more functions and a program to let people do it with a laptop.

Jason, want to take this one?

[AJxtcman]

I can reprogram or recalibrate PCM's to most specs. I can not finish a Package to sell yet. SOON. I will need to unlock more options. As you can see I am into them. I have completed some programming that removed all OBD II functions. This would mean it was no longer OBD II be the definition of OBD II. I have actually by passed all OBD II test. The good thing on what I did was I set the OBD II readiness codes to Pass. If you when to an emissions test you would PASS the test. Some other systems or programers just turn off the DTC's.

[Maxb49]

What kind of horsepower gains can you promise with your tuning?

[Coreyned]

o ok yea you definately need to tell us how

[dkozloski]

Originally Posted by AJxtcman

I have the ability to Recalibrate Northstar PCM's. I am working on unlocking more functions and a program to let people do it with a laptop.

What are your credentials? What makes you different from the other wannabees?

[eldorado1]

Originally Posted by Maxb49

What kind of horsepower gains can you promise with your tuning?

I just read "reprogram...recalibrate"

Which you can do with a tech-2, but I wouldn't call it tuning.

[AlBundy]

Ahhh, a new batter steps up to the plate. Can he hit the homerun?

[submariner409]

Do you still retain the original VIN PCM programming in order to go back to Square 1 if need be? ......and is your hack good for post-'00 OBD II vehicles?

[AJxtcman]

My Northstar does 0 to 100 MPH in 9.6 second.
I had a lot of tire spin and ran a 13.5 quarter mile.
I am a GM tech and I found away to do it. I can not say too much more. I am working on some more deffinition files.
VIN 9 are the easiest. 2000 to 2003 are simple. I have done several upgrade programs test runs. I will hunt up a 2000 to 2003 PCM work it over and take some pictures or screen shot.

[codewize]

As you can imagine I'm sure I'm not alone when I say I'm having a difficult time believing you. We all hope and pray for that day, but you're going to really need some hard proof to sell this crowd on your claims.

I specifically would be looking for gains in HP and torque, elimination of speed limiter, future tunability for fine tuning at the track or on the dyno. I want to see dyno sheets before and after.

I hate to seem like I'm being difficult but this claim has been made before with no materialization at all. If anyone can re-tune the N* PCM without loss of drivability or dependability that person shall be the hero of all man kind.

[AJxtcman]

Just so we are all clear on the definition of OBD II.
OBD II requires that the on-board computer monitors and actively perform diagnostic test on the vehicles emission systems.
If you turn off an EGR valve you no longer have an OBD II car.
Most programmers have just turned off the OBD II monitors so a code is not set. I have a way the not only shut off post converter O2s, but set the PCM to display passed on the readiness codes used in emissions testing.

On the Tech 2 you can monitor system status (I/M Flags)
You will see a list as follows
TEST ----------------------- COMPLETED
Oxygen sensor -------------- YES/NO
Oxygen sensor heaters -- ---- YES/NO
Catalyst --------------- ----- YES/NO
Evap System --- ------------- YES/NO
Air System ------------------ YES/NO
EGR system ------------------ YES/NO

Any time the DTC's are cleared or service programming has been performed the I/M flags are reset to NO and you must perform the drive cycles.
.
I have recalibrated a 00 - 03 PCM on the bench "no car attached" and had all the I/M flags set to YES.
I rechecked the by setting it back to the stock VCI for the VIN and it showed NO.

[codewize]

OK well that's all fine but basically what you're saying is you're altering the emissions system monitoring to always be in the 'READY' state. So the system is no longer working correctly and wouldn't throw a code if there was a problem?

Do I understand you correctly?

Having said that what can we expect as far as performance gains? AND what kind of ETA do you anticipate to have such things available to us?