walbro fuel pump?
- Thread starter boostaddict
- Start date
thanks for the help everybody. and to answer your question as soon as it hits full boost the wideband pulls down to 12.8 or so, then leans out. and the few times i hit it i saw it hit 14.1 cause i look down and realize that its not right, so i let offfiggie;1160549 said:<-- waiting for when the Chinese start to knock off Weldon fuel pumps! Not that I want to buy those, hell no. But want to see how much they sell them for
Boostadict
you saif the wideband reads lean. How lean (AFR # please).
The walbro is running of the stock wiring? You will NEED to upgrade that wiring as the Walbro pulls more current than the OEM MKIII Fuel pump.
"550cc rc injectors, lexus afm,aem uego wideband,walbro fp, what ever stock fuel pressure is and whatever volts run to it.and the turbo is set for about 14 psi "
and an upgraded turbo... so the 550 + lex = rich. and the walbro should make it rich also.... so if you are in fact running 12.8+ AFR... then your not getting the fuel.
you could try to turn down the boost to say 10psi, and see if that makes the AFR any better. but it sounds like the fuel pump isnt moving the fuel.
and an upgraded turbo... so the 550 + lex = rich. and the walbro should make it rich also.... so if you are in fact running 12.8+ AFR... then your not getting the fuel.
you could try to turn down the boost to say 10psi, and see if that makes the AFR any better. but it sounds like the fuel pump isnt moving the fuel.
The upgraded CT that he has will offset some of that richness though. By how much, not sure, but upgrade the wiring first and report back. If it's still lean, I'd guess you got a knockoff fuel pump.
ya i turned the boost down to 6 psi last week to see what that did and same thing so im looking for the post to see how to wire it and im going to try that
