i've recently done a TBI and manifold swap on my '86 350. i'm having some issues that i can't quite figure out. its having some serious detonation issues after the engine is warmed up. i replaced the EGR valve and solenoid with no improvement. there are no codes to speak of. I'm wondering what the engine would act like with a bad Electronic Spark Control Module? I'm also wondering how the engine would act with a bad Ignition Control Module? thoughts? opinions?