This is what my tuner just said. Lemme know if it is rubbish haha.
"13 is a very standard AFR for normally aspirated.
I would run an old 2-valve pushrod engine at 12.5 because their combustion chamber design is really poor and detonation can happen fast. but today's 4 valve engines have advanced combustion chambers that are designed to prevent detonation from the start."
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309WHP/255TQ ~ UpRev ~ F.I. CBE/12" Res + HFC ~ Stillen G3 ~ CZP ~ Eibach Sways ~ SPL ~ Project Mu
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