Thread: Increasing fuel pressure to 4 bar. benefits?

JWT only has the 4 bar program for the 370cc injectors. They won't do any other programs I don't think. They recommend against running 4 bar, they only did it on the 370cc stock injectors so people could do 280-290whp.

Now that is interesting. I change my vote to don't do it for an NA car unless you already have 370 injectors, Walbro fuel pump, and a adjustable FPR or want to buy them for future turbo ambitions.

Yeah, I thought you could do it to any injector besides MSD. Ok, so I will not look into increasing fuel pressure. I'll look for more power somewhere else which is getting kind of difficult since I would have every bolt-on available.

Ok yall, stock fuel pump is NOT 190LPH, the 300z stock pump is though.

4bar on 259's is just stupid, go get some 370's and run 3 bar.

THe difference in fuel atomization is nill on a sidefeed injector that small.

Brent