what does it exactly do?

i'm going to use a zex kit pretty soon and i will be putting my walbro 255lph back in that i used when i was turbocharged.

will putting the fuel pump back in make me run too rich?

thanks

 

It flows more fuel (LPH) than the stock pump.

No, it will not cause you to run rich.

 

supposedly the stock fpr can't bypass enough fuel with the 255, resulting in an increase in fuel pressure which would make you run rich.

 

Get an aftermarket FPR. Be sure to get one that you can turn the static fuel pressure down on...on ones like the B&M unit you cannot do this. Or you can use the B&M unit and drill a very small hole [about .035"] in your FPR...there are details on how to do this on Endyn's site.

 

yeah....i have a b&m fpr with a small hole drilled in it already. its just sitting in the back of the car. i'll use that one.