Quote:
Originally Posted by 1KillerSS
Personally, anytime you change the air flow into the engine, I would tune it. Now the question, " will not tuning it effect my car negitivly?" I would have to see what the AFR does.
I thought PRAY tuned his car when he changed his manifold?
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PRAY tuned his car first and then installed the ported bits. They did not affect the AFR so there was no need to change the fueling. He also fiddled with the ignition timing and found the stock strategy very good, within a half degree of optimum for his engine.
Keep in mind the ECU is operating in closed loop for spark (via knock). The tuning topics of fuel injection timing and cam phasing aren't as commonly discussed here but it's unlikely there's a ton left on the table with those.
Hope that helps,
Ryan