Transmission tables
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Registered User
Joined: Oct 1999
Posts: 3,531
From: Battle Creek, MI
Transmission tables
Can someone take a look at my transmission tables and see if there's any more room for improvement in shift points and shift firmness? Also I want the converter to lock up part way through third gear at WOT, but I can't get it to work right.
Here's my tunercat files:
www.sixtyninecamaro.com/images/pcm/
"crappy.bin" runs bad, closed loop, but trans works as it should.
The other is open loop, runs great, but trans doesn't work right. First gear acts almost like park in the open loop program and overdrives unlocks below 2500rpm or so. Can you find a difference that would cause that?
Disclaimer...Don't use these on your car unless you know what to expect...
Here's my tunercat files:
www.sixtyninecamaro.com/images/pcm/
"crappy.bin" runs bad, closed loop, but trans works as it should.
The other is open loop, runs great, but trans doesn't work right. First gear acts almost like park in the open loop program and overdrives unlocks below 2500rpm or so. Can you find a difference that would cause that?
Disclaimer...Don't use these on your car unless you know what to expect...
Last edited by Timberwolf; Aug 9, 2003 at 04:00 PM.
Thread Starter
Registered User
Joined: Oct 1999
Posts: 3,531
From: Battle Creek, MI
I guess I should mention my setup too...
2400 stall lockup converter
stock cam and heads (with 1.6 rollers)
occasional nitrous (which throws the shift points WAY off)
2400 stall lockup converter
stock cam and heads (with 1.6 rollers)
occasional nitrous (which throws the shift points WAY off)
Last edited by Timberwolf; Aug 10, 2003 at 01:31 AM.
Registered User
Joined: Jul 2001
Posts: 4,577
From: DeKalb, IL
I am noticing you're using some Hypertech tweaks on both programs. Except you didn't seem to copy it correctly into the open loop one. Also, I don't see how the open loop one could have firmer shifts than the other one. The other things I'm noticing is that you messed with the Throttle Follower and IAC settings. I'd put those back to stock. (you can of course leave the idle higher as you set it, although I don't really understand why you set it up the way you did.)
I am also noticing the shift times are quicker for lower TPs on the crappy bin. I am guessing the "crappy" bin is an original, Hypertech tuned bin, and the open loop one is an attempt to copy some of the things from the crappy one.
BTW, why do you want the converted locked up at 106? It is locking up at 100 in both programs... this is set by the "forced" lockup table.
I am also noticing the shift times are quicker for lower TPs on the crappy bin. I am guessing the "crappy" bin is an original, Hypertech tuned bin, and the open loop one is an attempt to copy some of the things from the crappy one.
BTW, why do you want the converted locked up at 106? It is locking up at 100 in both programs... this is set by the "forced" lockup table.
Thread Starter
Registered User
Joined: Oct 1999
Posts: 3,531
From: Battle Creek, MI
Well, the crappy bin is a hypertech bin. The open loop is one I got from someone else. I had to drop the idle down already because he had a larger cam. My car runs pretty well on th open loop bin other than the trans problem. Did you see anything on those that would cause what I described?
I know the bin needs a lot more tweaking, but I can't begin to really do that until I can drive the car and monitor what's going on with it...
I know the bin needs a lot more tweaking, but I can't begin to really do that until I can drive the car and monitor what's going on with it...
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