I just bought an adjustable fuel pressure regulator for my car and was wondering around what should I set the fuel pressure at? It is a 305 TPI and the modifications done to it are a cam (260/260 adv. duration .444/.444 lift, 112 LSA) Hooker 2460's and Y-pipe, Flowmaster 80 series, custom burned chip, and K&N's, what do you think would be a good setting for me to try?

 

any ideas?

 

Stock is 42lbs. Start there and adjust until you feel the car lose power.

Its really a trial and error thing specific to whatever your car likes.

 

Im new to this efi stuff (figures I pick a dinosaur engine LOL)

Does adjusting the Fuel Pressure on a stock tpi (well new cat and cat back) make any difference?

 

The ECM will learn to adjust to increase/decrease of fuel up/down as long as it's within the operating range. You may feel an crease in power until the ECM relearns. If you go out of the operating range the cat will suffer. Injectors will wear out sooner with increased pressure, atomization suffers with decrease in pressure. I sure there's more that others can tell you.