PCM Tuning Progam for NorthStar V8's?

N0DIH · #1 (**permalink**) 01-18-07, 09:31 PM

http://www.hptuners.com/forum/showth...ight=northstar

Show your interest!!! Only serious interest please, be honest if you would buy it if they had it.

stbtt · #2 (**permalink**) 01-19-07, 03:31 PM

i started that post its to bad that only a few of us posted on it

i know i would get it for my car and a few of my customers that want it i need this for 2 2003 97 and 00 modles

N0DIH · #3 (**permalink**) 01-19-07, 03:37 PM

I have a friend with a 96 that needs it.

I just stumbled across it when I put in Northstar just for giggles and low and behold there is interest.

Is the 95 and older REALLY a plug in PROM? Or is that just a guess??

Anyone got a N* PCM that can take some detailed pictures of each IC for me? Maybe we can find out something on that it might take to make it work.

Worse come to worse, we unsolder the flash part, put it in a real programmer and do it the old fashioned way. I just wish they wouldn't have adopted this goofy OBD2 protocols.

CadillacSTS2003 · #4 (**permalink**) 02-28-07, 11:35 PM

ITS ALIVE
ive given those bastards there something to think about....

N0DIH · #5 (**permalink**) 03-03-07, 02:18 PM

Anyone got a spare PCM to work on?

It might be faster to pull the flash memories and then read them to get a actual code.

You need to determine which IC's they are, what processors they are and then decipher the communication they are to use.

But like they said, screwing up can "blow" a PCM. But, rarely is the PCM "bad', it is just a corrupt flash. So you simply toss back in your programmer and flash it back and solder it back down. The PCM is back in business.

The fun is then breaking down the OS and figuring out which table is what, which switch setting is what and what constant is what.

I work on hardware, I am not a software junkie. So the first part is pretty easy. Second isn't my forte....

CadillacSTS2003 · #6 (**permalink**) 03-03-07, 02:31 PM

i can prob get one
but i know ebay sells them all day for like 20 bucks

N0DIH · #7 (**permalink**) 03-03-07, 07:55 PM

That cheap?? Wow, I wouldn't suspect that cheap. Hmmm.....

N0DIH · #8 (**permalink**) 03-10-07, 09:42 PM

Owch. HP Tuners is ticked at Cadillac owners!

http://www.hptuners.com/forum/showth...?t=9364&page=3

Not quite sure what sent them over the edge, but I guess that is how they handle it.... Oh well.

My guess it would take $2-$5K to do the work to break the code and get a solid definition file. Salary, PCM's, technican work to pull parts and fix things, and software guys to do the work.

How long to break even and then how long to be profitable?

90Brougham350 · #9 (**permalink**) 03-11-07, 10:46 PM

A long time. The number of people that own N*-powered vehicles and have shown significant interest in a tune sure wouldn't be enough to motivate me as HP Tuners to get to work on it.

N0DIH · #10 (**permalink**) 03-12-07, 12:07 AM

Well, EFILive has done some work on the 4T80E in the 06-07 Devilles. Maybe they are next on the list!

Everyone who is seriously interested, email TC@tunercat.com, he is the software engineer and designer of TunerCat OBD1 and 2, which 2 is now Jet Spectrum Tuner, but he still is the software guy to convince....