quote Originally posted by Fierobsessed: your right, the 89 GTP didnt have a speed limiter. it maxes out at 255, witch I wouldn't worry about going that fast yet I know Ill be burning insane amounts of chips, because I probably burnt 15-20 and have gotten practically nowhere, I couldnt get the car to Idle for nothing, surge surge surge die. I quickly got the hint that it wouldn't be so simple. I dont know why I thaught that that table represented the duty cycle based on boost, thats what happens when you stay up way past bed time. I know that duty cycle is based on MANY different factors. Are you running lean cruise (hiway mode) on your car? How did you go about tuning it? wideband OČ sensor? Dyno? Scan tool and BLM? [This message has been edited by Fierobsessed (edited 02-02-2003).]

I'm not runing hiway mode. Initially I was tuning by following the integrator, but I built myself a wb-o2 controller and now tune exlusively with wb-o2 on the street. I haven't done any dyno stuff yet. I would really like to dyno it just to get some real hp numbers. I have modified the algorithm and written a code patch that takes the wb-o2 sensor input and displays it in the aldl stream. Using "Carbytes" I can log MAP, RPM and wb-o2, obviously running open loop continuosly. BLMs with the TGP code are useless, since there are only 2 values: idle and off idle.

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1988 Fiero Turbocharged, Intercooled 3.4L DOHC
http://home.cc.umanitoba.ca/~umfreedd

I know GM built something like 15 manual trans TGP for internal use (pace car?). I suspected it might have been the manual trans flag, but I guess it was wrong. Once I figured out what I needed for someone I dropped it and moved on to other code.

You can spend a lot of time on it.

The only DOHC code (BCFA?)I worked on had the limiter at 120 MPH. I think that was the last revision.

I made a patch for the revlimiter since it stopped at 7150 and I didn't have time to check if the code considered FF "OFF" or max. Nothing like a DOHC at 7500+ RPM. Frankly, I wouldn't do it a lot.

[This message has been edited by TK (edited 02-03-2003).]