I got 440cc rc,s and a vafc in my car along with a missing link and a 12:1 vortech fmu. The car bucks a little at around 10% throttle in every gear but is more pronounced in first. also every time i change the plugs its so black i cant even see the white ceramic, i know its rich but where idle,cruising or wot. any tuning tips thanks.

 

take out the FMU and missing link...run -40% across the 1k-4k board, then -35% from 4k-8k. that's the Hack. Also retard base timing 3 deg. at the distributor.