| The below chart should only be used for general guidance, please consult your tuner before picking injectors. When making these recommendations there are a number of assumptions being made: a brake specific fuel consumption (bsfc) of 0.56, fuel pressure at a constant 43.5psi (stock fuel pressure), and 91-93 octane gasoline is being used. Once you go past 565cc injectors it is suggested that you upgrade your fuel pump so that you keep your fuel pressure at a constant 43.5 psi. If the power you are making is out-flowing your injectors you have a number of options: you can get larger injectors, bump up your fuel pressure, or use higher octane (not an answer for street cars). JSC Speed does not suggest modifying your fuel pressure when there are injectors available for your power range, if you do choose to change your fuel pressure we suggest staying below 65psi. |