fuel regulator

[gtstvp]

just after some info on how fuel regs work and what u can expect to acheive with one.

im running out of injector flow and ive had 2 solutions come up - bigger injectors (already got 500cc) or fuel reg and bump up the fuel presure

what are the pro's and cons of both?

[R31Nismoid]

with a fuel reg ur just cutting corners.

you will get a bit more out of stock injectors by bumping up the rail pressure with an adj reg. But not a lot.

get the injectors, use the stock reg. And you'll never have a drama. I aint... cars still running fine.

[Guilt-Toy]

okay mate. This is the go.

Normally Nissans run about 35psi of fuel pressure through the fuel rail at idle which then raises 20psi under boost. If you install a adjustable fuel pressure regulator you can set the base pressure to 55psi which then raises the fuel pressure to 75psi under boost which will squirt more fuel into the cyl and allow you to get that little more out of your injectors - think about a 15 - 20% increase in injectors.

So if you DO decide to do this instead of updating your injectors please go for a good quality fuel regulator.

SX

Nizmo

Sard

In that order - or any of the above fuel pressure regulators are reliable. The malpassi ones available have been known to fail so try and stay away from them.

If your only after a little extra power or keep the injectory duty down the fuel pressure reg is the way to go - otherwise get 700cc injectors and be done with it. Not worth exploding your engine.

[gtstvp]

i was planning on running another 4-5 psi of boost, so im guessing that the smart and safe thing to do will be to get the bigger injectors.

anyone interested in my 500's?

[Guilt-Toy]

maybe what do you want for them ? I seen your car at turbo technics a few times...

add me on msn [email protected] and we can chat about it