I've got a 95 GT with afr 165 heads, trickflow intake, full exh. and the other bolt on things. I've ran into some idle problems that I can not get tuned out. I've heard alot of people say the only fix would be an earlier model computer swap. Any advice? Also, do you think the stock fuel system will be sufficient for the aftermarket parts that I have on the car right now, or do I NEED to upgrade that as well? Thanks for any advice.

 

Welcome to the forums, the best advice for your 5.0 is over in the 5.0 section, but the following link will cure your idle issues:
http://www.muscularmustangs.com/maintain.php
You dont need to swap the computer to an earlier model the 87-95 have the same ECM and are all OBDI, anyways the stock fuel system will be sufficient for a N/A motor.

 

thanks