Change pcm vin on obd2

[acid5868]

Is there anything out there to be able to change the vin number on a obd2 pcm? Currently have jet dst but i know there is no option to do so.

[popo8]

Is there anything out there to be able to change the vin number on a obd2 pcm? Currently have jet dst but i know there is no option to do so.

Just go to ur local gm dealership.

Just an LTXtech addict

[acid5868]

Thnx Popo, any idea what they charge these days for that?

[popo8]

Thnx Popo, any idea what they charge these days for that?

no idea...sorry, I have a guy...so i just get it dun... u know.

MEMBER @ LTXtech.com

[acid5868]

Found out they want 173 for it and are telling me they want both the bad and good pcm incase they need to take parts off it, didnt make sense to me. Decided to go another route.

[popo8]

Found out they want 173 for it and are telling me they want both the bad and good pcm incase they need to take parts off it, didnt make sense to me. Decided to go another route.

hell thats alot. I know Bryan Herter will burn a tune and vin into a pcm and ship for like 150-160.

MEMBER @ LTXtech.com

[bobdec]

acid, from some of your other posts looks like you have a "fried" PCM on a '97 F-Body, and you use Jet DST. Are you trying to get change the VIN on a replacement PCM so the DST will work ?. You may want to contact one of the mail order tuners to see if they offer that service, or another way out, maybe repair the old PCM.. Since altering the VIN may bypass some tuning vendors software licensing restrictions, they may or may not not offer the service, but it's worth a try. Not sure what the dealer wants to take off of the old PCM, unless it's electrical to make sure it can never be used with the same VIN, maybe a legal thing. As far as the $173.00, probably quoting you the 1 hr minimum, since they are not selling you any parts they need to make it up with a labor hit...

[GaryDoug]

For what it is worth, my OBD2 app can be used to change the VIN, as can most terminal emulation apps. Now I am talking about just changing the number, not anything else in the PCM. And I have no idea of the complications that might result from doing that.

[firebird_1995]

We were basically looking at replacing his fried pcm in his camaro with another used unit from a caprice without using another tuning "credit" with the DST. I'm going to socket his bricked pcm and send it back with a generic tune as I don't have provisions (that I know of) to upload his current tune without using one of my "credits" with my DST. This is the first obd 2 pcm we've done. Why is the software so restrictive compared to obd 1 stuff?

[bobdec]

"Why is the software so restrictive compared to obd 1 stuff?"

All I can think of is high software development costs, manufactures changing PCM more often and low volume of users. Or we may be paying for vacation homes in the islands or big yacht's .. not sure !!!

Other Costs...OBD2 refers to a scan piece of data as a PID (Paramater ID) there are standard industry PID's across all vehicles that any low cost scanner will display, there are manufacturer Enhanced PID lists that better scanners will display (Torque Android App) . Then there are the Non-Standard PID's that are not published (and pretty well kept liscened & secrete) that require a subscription with the manufacturer to access. As an example (these are old numbers from a cut/paste from Wilipedia.com). GM $50,000/yr, Honda $5,000/yr, Suzuki $1,000, BMW $7,000 plus $1,000 per quarterly update.

IMO..With the combo of non-standard pids and complex code (multi cams, variable displacement, torque management) the days of free scanning and especially tuning are getting short.. For my '07 Envoy, there's no free software or low cost scanner out there that tells me how many degrees my exhaust valve cam is retarded, or can provide correct spark retard data, or percent cooling fan engagement. After all the low cost and free software available for my '94 Z28 it was shocking to have to cough up $500.00 for HPtuners (also VIN restricted) so I could data log and tune. Heck it's going to cost just to carry and program a spare PCM..The subject of this post..