Long shot but need a PCM scan with PT

[LukeD]

I need a scan of a 99 GAGT with someone's powertuner. It has to have an "OS ID" of 9366315. I have the same year but my OS ID is different. I know it's a long shot but if anyone with a PowerTuner happens to have their stock PCM and it matches this OS ID, could you scan it and make a bin file for me? Charles is turning my custom supercharger pcm from ASE into something I can edit with DHP but he needs a pcm file with that ID to put the stock comparisons in it. Thanks.

[tejohnson]

No, you need a different calibration. See: http://calid.gm.com/

Part Number Cal.ID# CVN Description
9386604 9386580 N/A New calibration to correct loss of power when accelerating caused by false spark retard
9366344 9366315 N/A Control module calibration

9366315 is the OLD OSID for the 99. You want 9386580. (In short, you need the exact same calibration I am using)

You can verify this info using the link above. You just need your VIN. Hope this helps.

EDIT: After re-reading, I think I understand the issue. The ASE used the buggy calibration, hence, you need a copy of that buggy calibration. Gonna be a tough find.

[LukeD]

After re-reading, I think I understand the issue. The ASE used the buggy calibration, hence, you need a copy of that buggy calibration. Gonna be a tough find.

Exactly. Does that just mean I need the scan of someones' 99 who hasn't gotten the update? I'm not exactly sure how that works but maybe when one's vehicle is taken into the dealership for maintainance, the shop reflashes the PCM with the most updated calibration? Maybe someone who never goes to the dealership would have it, or one who has a very early 99 model?

[tejohnson]

Only need to do a "read". I'd look around on car-parts.com and see if you can find a 99 GrandAm GT PCM. Must be the exact year, and you just may be lucky. If you find one for a decent price, and you wanna sell it, I may even take it off your hands... (for a spare).

Are you getting Powrtuner or just getting it reflashed? Honestly, if you are goin with the Powrtuner, just by a junkyard PCM and flash it with with the latest calibration. THen do your tuning off of that. Sorry, but it is kinda hard to understand what the intent is ;)

[LukeD]

Well I already have the PowerTuner. I actually have 3 PCMs right now, first is my stock 99. This one isn't one with buggy calibration however. My second is a spare with DHP 1.5 on it. My third is the one from ASE that is tuned for the supercharger.

I've just started into tuning, actually haven't even made any changes yet myself. I could use the second DHP 1.5 pcm to load whatever I want but it isn't tuned for a supercharger. I'm guessing the timing is advanced on it as well, where I need the timing to be retarted.

Charles tried to load the stock data for comparison but he doesn't have a copy of the buggy programming. He did unlock the PCM though, I guess I just don't have anything to compare to.

[tejohnson]

I'll give you mine for comparison... I'm not shy ;) See:

http://groomlakelabs.com/calibrations/20060118_001.bin

I will be reverting most of it to stock with the new setup and starting from scratch...

You should test out the conversion to a 2bar MAP ;)

[LukeD]

I'll give you mine for comparison... I'm not shy ;) See:

http://groomlakelabs.com/calibrations/20060118_001.bin

I will be reverting most of it to stock with the new setup and starting from scratch...

You should test out the conversion to a 2bar MAP ;)

Nice! Thanks. Does any part of that need to be changed for an eaton? Maybe I'll give it a try tomorrow.

[tejohnson]

I wouldn't recommend flashing that to your PCM.

1) It is set up for 42.5# Injectors
2) The car was at ~11 PSI when entering PE
3) The settings for torque management for the tranny has pretty much been removed, you could do some damage.
4) EGR & EVAP are removed, so I disabled the DTCs

The intent was to give you a copy for a comparison.

[LukeD]

ok thanks, I need to really read more into pcm programming. What are some of the benefits of a 2-bar MAP? How would I go about incorperating that into my 1.5 file? Also what would you suggest I retard the timing to, if I were to use that pcm instead of the one from ASE?

I just know the basics (if that) of programming my pcm right now, and I've pretty much just been scanning and reading posts on gmv6pcm.

[tejohnson]

That is one of the reasons I posted the file. Open up the various timing tables. Compare the current values with the stock values in the right side. You will notice that the timing has been delayed a tad in the higher cyl pressures and RPMs. Mine is more reserved for safety, and I so run a tad more rich as well. I could have made a bit more power if I were more willing to lean it out and raise the timing a tad. As for adding in the 2-bar, you will be able to get your fueling more accurate with a VE tune. You will notice in my calibration, VE is still completely stock. In the 2000+ calibrations, most Grand Am folks have had quite a bit of luck with the VE tuning alone.