What a great way to start the weekend, walk out from working 14hrs to find my car wont start, turns over fine, but then I noticed no annoying high pitched whiny hum coming from the trunk area. Car only have 24k miles, and since I'm fairly sure its out (haven't checked the fuses yet though) I'm wondering if I should view this as a opportunity to get a aftermarket pump. Just I'm wondering, if I go aftermarket, do I have to tune for something like that, or the oem injectors will still meter out fuel properly?
The walbro would be a good upgrade and provided no change to the fuel pressure regulator it should have minimal if any change to your tune as the injectors should still be running at the same pressure unless your old tune was done with a failing pump.
ok thanks, yah the car is on stock oem tune. But thinking about how stuff works in my head, I figured the injectors took care of the metering, but wasn't sure if increasing the fuel pressure would mess something up
no pressure change - same FPR no flow change - same injector unless supply was not sufficient (old FP) no tune required
walbro is a cheap/easy upgrade, take this opportunity to switch it out. then future upgrades are one step closer
Thanks everyone for the info about fp's. After tinkering about the car last saturday, it turned out the fp was priming and was fine, but the car still wouldnt start. So after spending a couple hours nosing around the car, I threw in the towel and had it towed up to Troncalli in Cumming (super friendly ppl there). Long story short, the immobilizer chip in my key failed and they replaced all of my keys. Go figure....though I think a walbro may still go on order for something in the far far future build plan