tragic00

well so i put a walbro 255 lph fuel pump yesterday.

car seemed fine after it was in. went in with no problems.

but after a day of driving it, now the fuel leveler is out of whack, it'll say half a tank then empty and just go back adn forth. and when i run my car a tad hard it will pop like crazy during shifts.

i dont know if the wire guage is thicker so it creates more voltage sending more gas in and just making it more rich or what.

but i ran my friends m3 last night and he actually jumped on me when usually i just blow him away.

i was thinking maybe i'm getting back pressure because i have a temporary exhaust on which is a 2.5 in catback, but my cat is 3" so its a bit more constrictive.

i dont know if this is whats causing all the popping and my car to "lag" or something of the sort but it does seem slower.


if it helps my mods are : full bolt ons, intercooler, 99 spec turbos, street port pettit engine, running 8-10 lbs which is pretty rich, and i think that might be my problem.

i dont know help me out

crazyrx7

You should of searched. The walbro is notorious for making the car run really rich especially at idle. You should either get a adjustable fuel pressure regulator or a power fc so you can tune the fuel.

As for the fuel lever; make sure its not hung up on something. Just take out the fuel pump again and double check your installation.

R.K.