Fuel Pressure question - Toyota Nation Forum : Toyota Car and Truck Forums

MR2QuiK · 01-25-2004, 08:34 PM

I raised my boost so i was thinking of raising my fuel pressure to balance it out. do you guys think its a good idea? what is the stock fuel pressure ? and is it worth it?

JekylandHyde · 01-26-2004, 09:10 AM

The MR2 already raises FP for you.
Base idle FP is 36 psi ... as you increase boost, the the OEM FP regulator raises FP by 1 psi for each psi of boost added.

If you are on the stock turbo, you will never out run the fuel system.

If you have upgraded to a larger turbo and are running big boost (over 18 psi), you may want to buy an adjustable FPR so you can raise your base idle FP.

Base idle fp + boost should never exceed 65-70 psi.

MR2QuiK · 01-26-2004, 08:56 PM

thanks for your information

Deuce_Bigalow · 02-05-2004, 05:13 PM

Is there an adjustable fuel pressure regulator that is rising rate? Like the OEM one? I need more fuel for my HP goals.
Any suggestions on what FPR to go with if I am just increasing the fuel pressure to increase the flow of my 440's?