ok i have a question i am new to the tuner scene bought a gsr hatch from a friend with a few up grades. i was told by my friend that he has a Jackson Racing fuel regulator with type R fuel pump, when i told another friend about this he said that was a retarded upgrade to make because it would make my car run rich and slow her down. Is this true will the jackson racing fuel reg. w/ the type r fuel pump make it run rich? thanks a bunch guys!

 

Is the fuel pressure regulator adjustable? Greater fuel pressure will cause your car to run richer...

 

to be honest with you, i don't know...(now i prob really sound like an idiot haha) how could i find out besides asking the prev. owner?

 

bump

 

The fuel pump won't affect your fuel mixture.

 

the car runs great and doesn't smell rich at all! (like i said i'm new to the tuner secen) if you put a fuel regulator on with a new fuel pump you could set the mixture corectly, right? so the kid who told me; this was stupid to have on my car was pretty much talking out his ***? what is your guys opinion

 

bump, anyone?

 

Anytime you try and throw more VOLUME through a FPR which can't return the excess back to the tank, your fuel pressure will rise as a result. As a result of a higher fuel pressure, you will now run richer.

Is the particular combo you have installed causing this problem, I dunno. But a lot of people who install the Walbro 255lph HP in tandem with the stock FPR seem to generate higher fuel pressure.