PuckPuck
CEG'er
What is the part # of the 255lph walbro fuel pump I need for a returnless fuel system. A link with a website that has them for a low price would also be very welcome.
I don't know what it is, but why don't you stick with what you have and keep the boost moderate till you dyno. Then increase the boost and tune accordingly until you are starting to go towards lean (a little bit). If you command more fuel at that level and there is no sign of it getting richer, then you probably have a pump issue and you can replace it.
I though about that... then though about costs...
a dyno tune is 200$ easy... fuel pump is 120$ tops.... and if i buy a new pump, I can sell my existing one for 40$ or so.... I just don't feel like spending the 200$ twice for dyno tunes, because I didn't want to spend the 80$ in price difference earlier....