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View Full Version : Trade: walbro 255 for a 190

s1ngletracker
06-30-2009, 11:16 PM
Anyone want to upgrade to a 255lph from a 190lph? I don't need a 255, I'd prefer a 190 so I can more suitably run my stock FPR.
Constant_Project21
06-30-2009, 11:42 PM
Yea sorry about that...lol
tehehodi
07-01-2009, 01:20 AM
Is that the stock fuel pump size? if so i have 2?
Swifty1638
07-01-2009, 01:39 AM
no pat, 190 is more then a stock pump.
s1ngletracker
07-01-2009, 01:51 AM
Not entirely sure what a stock pump is... good question. You know, Swifty?
Swifty1638
07-01-2009, 01:58 AM
What? What it flows? or what?
s1ngletracker
07-01-2009, 02:23 AM
What? What it flows? or what?

yeah.
Swifty1638
07-01-2009, 02:29 AM
When doing research on a stock pump a LONG time ago, some said that it flowed around 110-115 LPH. Furthermore, I also found (on VFAQ) that from the fuel pump outlet to the fuel rail inlet fitting, @ 60psi, it flowed of 1.9 liters per minute, and when the pressure was increased to 75psi, the flow only went up by 0.1 lpm. That's only ~5% more flow for a 25% increase in pressure! So, stock pumps are not that great. You can "band-aid" the system by doing a simple rewire so there's more voltage for the pump, or..just upgrade!