wondering if there is a difference

[tegerick]

hey any of yall know if ther is a difference between integra gsr and ls fuel pump?

[tegerick]

i guess no one knows then

[Kirwan]

You might have to wait a little more than 12 hours for the right person to come along. This isn't a very fast moving board.

Without any actual experience in the matter, I'd guess that they use the same fuel pump. These fuel injected cars use a pressurized system with return bypass; there's a fair amount of tweaking that can be done by setting the fuel pressure regulator, so long as the pump puts out enough flow. I doubt the difference between 140 and 190 hp is enough fuel flow to require a different pump. Back when I did mustangs, we didn't go to larger pumps until we'd almost doubled the stock HP (from 225 to 400).

[whtteg]

They are the same. You don't need a larger one unless you are going to see 250 ish hp.

[tegerick]

what about when the vtec come in does that make a diff. shouldnt a gsr be more powful then a ls

[whtteg]

No the fuel pressure is changed by vacum and the extra fuel is delivered by changing the duty cycle of the injectors and the extra fuel pressure.

[tegerick]

so i guess all the honda and acura pumps are the same?

[whtteg]

No just the different modles of integra's. If yoiu want a higher flowing fuel pump then buy a Walboro they cost like $98 and flow 255lph.

[tegerick]

well thanks guys