will installing a walbro fuel pump change my fuel pressure?
If so, by how much psi & is it safe to run on stock ecu?


I don't think it should since the OEM FPR set's the fuel pressure, but I just wanted to check for those who have this pump.

TIA

 

I have one. Car was boosted, cracked sleeve, now stock b16. stock injectors, regulater, and 255hp in tank walboro. your fine. Get FP guage if your that concerned.

 

i have a evo9 pump and stock fpr and stock injectors with stock ecu..runs fine..**** i actually think i get better gas mileage..which is odd i would think i would be using more..no probs here..stock evo9 pump is like 210lph

 

It will not change fuel pressure after the FPR, [in fuel rail]. 94