Quote:
Originally Posted by ziekxq
Hmm what boost psi are you running on pure stage 2 on pump gas? And what boost psi were you running before upgrade of hpfp? My understanding is more boost requires higher octane or engine will knock, so pushing extra fuel with low octane rating won't do much. Anyone can correct me if I am wrong.
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IIRC, running PS2 with a stock HPFP (the newer kind, not your N54 style) limits the psi to around 16-17 and upgrading the HPFP enables you to get up to 20ish
Wondering if that's sort of just the limit for pump gas, or maybe if it just so happens that then the injectors become the limiting factor and this upgrade might actually be worthwhile. But, small chance, I figure.