If thats a hyper piston? I would have to say you need the engine or car on a dyno for tuning, Those are great pistons for a N/A street strip motor but your on borrowed time if your guessing at A/F ratio and timing. Saying that it still can be done but lower boost level will save your parts, Still 500hp Is nothing to sneeze at, You can scare most people with an honest
300hp in a light street car :happy7: