I have been going through a few posts and saw that I will need to double up the code when I copy it to the chip. can't I just use the 749 chip? (not the memcal) or what about the 27c128 chip? instead of using the 27c256.

If I have to double it up what is the best way to do it? I know there was a bit mentioned in the whole tech artical just want more clarification if at all possiable.

now as for the IAC wiring who is right? there is now 3 differant wiring schematics in these posts maybe 4 if I really look!

now my final question is if I change the( inj. size, rpm limit, cyl to 0=8, mph limiter) will it run well enough that I can keep driving it around with out much of a problem untill I get the fueling and spark tables right? or is it going to have some very strange bugs that come with retrofitting

what eng. and platform do you guys use to scan the pcm? (I will be using my tech1 incase you what to know why I ask)

 

Most folks run the 29C256, which doesn't require erasing. The stock PROM is fine.

It depends. About 1 in 5 guys has to flip them reguardless of what they do.

If your running a 4.3L v6 with 30PPH injectors it's fine, if not then you'll have some cal work to do, there's no way anyone is going to be able to guess what'll be close enough to run or how well by just reading what you have.

If you can read the IAC, O2, RPM, VSS coolant temp, MAT, Knock, TCC, PW, BL/int, and MAP you have the bases covered.