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caffeine
03-25-2014, 06:40 AM
Hey my name is Blair I have a couple OBD1 GM vehicles and do my own tuning. One is a turbo 3500 Firebird running nAst1 and I recently acquired a 94 S10 2.2 which apparently runs $0D.
steveo
03-25-2014, 06:44 AM
are you who i think you are?
caffeine
03-25-2014, 07:14 AM
are you who i think you are?

Well you're definitely who I think you are :)

I was was hoping to get some more info on here about the 2.2L $0D code. Most of the stuff is compatible with the V6/V8 $0D code but for some reason spark advance in the logs is waaay off and there's some other stuff I'm not sure about. I managed to pull the stock chip (BHFL) with my chip burner and make some changes that should improve fuel economy a bit. Also interested in some of the e-fan hacks out there but I'm not sure what the hardware differences are between the 2.2 and TBI ECMs.
EagleMark
03-25-2014, 08:42 AM
I had problems doing a PFI from a TBI $0D code and lost 10* when I removed the bias from the MAT and was not even using MAT.

I think your DIS? It would need a different conversion in the $0D ADX file?

Oh, and :welcome:
caffeine
03-25-2014, 08:50 AM
I had problems doing a PFI from a TBI $0D code and lost 10* when I removed the bias from the MAT and was not even using MAT.

I think your DIS? It would need a different conversion in the $0D ADX file?

Oh, and :welcome:

Yes I'm running DIS. When I'm logging the spark advance shows up as xx,xxx, like 23,560 or something like that. I changed the calc as described in the Xdf using the spark reference angle IIRC.
caffeine
03-25-2014, 08:55 AM
BTW I noticed you don't have a BHFL in your collection of $0D bins. Do you want a copy of mine?
EagleMark
03-25-2014, 02:20 PM
Sure, post it up.

The reason you adx file is reading wrong timing is because the 2.2L uses a differant ALDL.ds file to start. A265.ds and if you look at it the first thing it says is "* LIKE A217 WITH A MODIFIED SPARK FORMULA"

Go down to
*45 SAREFFNL FINAL VALUE OF SAREF(MSB)
*46 SAREFFNL FINAL VALUE OF SAREF(LSB)
DEGREES = (N*90/256) + 66

Seems that would be the only change needed to make the regular $0D 217 ADX file work for you.
RobertISaar
03-25-2014, 06:12 PM
yeah, more of team 60V6 comes to play.

anyways, GM could have avoided the issue if they had output spark relative to TDC, not relative to reference. i still don't understand why they chose that one for output in a lot of streams.
caffeine
04-08-2014, 07:02 AM
Here's the factory bin. I'll probably try out that modification to the .adx tomorrow.