What tool works for reprogamming this ECU.........everything I can find is 1990 and newer.
Ive been informed that there is no way to program this car and that a 3 bar map for this car would be a direct replacement for the stock 2 bar map
its only the odbII vehicles that need programming.....?
I tried the 3 bar map last night and my car did run......but the fuel studdered under boost? will this 3 bar simply not work on my car?
Search the net for $58, syclone, typhoon, tuning, syty, 7749, gmecm, 3 BAR patch, eprom burner, memcal, and whatever else you can think of. Get creative. Use google and boardreader.com. People have been doing this for over 10 years, so be sure and search farther back than 3 months.
-->Slow
well Im a nooB when it comes to tuning .....so im trying to come up with the answers right now.......and your helping me haha! so how similar is a typhoon and syclone ecu to my car?
the 3 bar map sensor is not a direct replacment, it requires tuning. the way a map sensor works is by using a 5 volt refference and depending on how much vacumne/boost there is, it sends a voltage signal to corespond. now a 2 bar map sensor is 0-2.5 volts in vacume, 2.5-5 volts is 14.5 psi boost. with a 3 bar map sensor, 0-1.6 volts is vacume, and 1.6- 5 volts is 0-29psi. basicly without programming your computer interperets the signal wrong, it thinks its at 3 psi when your actualy at 8 (just a quick example, i doubt those would actualy corespond).
also, without programming, there is no way to remove the overboost fuel cut at 12 psi, and you have no fuel and spark tables over 15psi, so a 3 bar map would be pointless.
