hey guys I need to know what kind of spark retard to run.... I plan on running 8psi w/fuel pump, fmu, fuel pressure regulator, 2 heat ranges colder plugs, and intercooled, need advice on how much retard or any other tuning tips thanks

 

Well that all depends. The obvious answer is retard until you have no more detonation. But I just threw my timing back prolly 4-5 degrees and called it a night.