ScoobySAM

iTrader: (24)

I just installed a walbro 255 fuel pump and now my car hesitates and i cant rev past 4k rpm. It idles fine but is very hard to drive as it hesitates like crazy. Is this normal after a 255 fuel pump install cause of the added fuel pressure? I'm getting ready to tune so i wanted to have all my stuff ready before. I thought i would be able to drive it around under normal throttle for at least a couple weeks. Please help, as i am about to take it back out.

btw, i have a custom tune for stock right now.

IEXCELR8

iTrader: (6)

go over the install and check everything.

So are you tuned for the other mods?

IEXCELR8

iTrader: (6)

here is a thread that will have some suggestions for you to think about/try.


https://www.evolutionm.net/forums/sh...l+pump+install

EatSleepBoost

iTrader: (9)

you need a tune as soon as u put it in. i put mine in and flashed in my friends walboro fuel map before even starting my car using my stock fuel maps

06MRV8Killer

iTrader: (28)

Make sure that you put the nipple back on the bottom of the new pump, sound like exaclty happened to me a couple of weeks ago, rechecked the work and found that we forgot to put the nipple back on the bottom.

ScoobySAM

iTrader: (24)

nevermind thanks for the help guys. I forgot to put that little plastic washer in between the fuel pump and the rubber grommet

rickay726

iTrader: (9)

so weird that a little plastic washer can **** with you so much!!