Nismo Adj Fuel Pressure Regulator

[SeriesIIGTST]

I just got one of these and don't have a guage to set base fuel pressure.

Anyone know what pressure they come set with from the factory?

Cheers!

[rev210]

get a guage. you need one and they are cheap ($20 odd)

[BOOSTD]

they come set to standard pressure. I installed one a couple of months ago.

[SeriesIIGTST]

nice one. Thanks boostd

[rev210]

Mate just go get a guage and make sure. I guess for the saving of $20 odd you can take the risk that you might lean out your nice new $5k rebuild.

[SeriesIIGTST]

yeah, i was going to, just wanted to make sure that the drives to and from work that I will have to do before i get a chance to get to the shops wasn't going to be doing damage to my engine...like you say, i don't want another $5K rebuild!

[Zombie]

I have one I havent installed yet, i'll let a pro do it.

But out of interest, how are they actually adjusted? Is it tighten the screw to increase or decrease?

Thanks

Adam

[BOOSTD]

increase

[SlowGTS-t]

Is there more than one type of nismo adjustable fuel pressure reg?

[Sydneykid]

Is there more than one type of nismo adjustable fuel pressure reg?

Yes at least 2, one fits on the fuel rail and one is for remote mounting.

[Bl4cK32]

do you need one of these if you're running bigger injectors (550cc) and a 044?

[Sydneykid]

do you need one of these if you're running bigger injectors (550cc) and a 044?

Only if you need to increase the fuel a little more than the injectors flow at standard pressure.

[SlowGTS-t]

sorry I mean are there different kinds for boost and vacuum apps (turbo & n/a)

[32ZiLA]

Anyone know where you can get a fuel pressure gauge for $20?

I've been looking around and I can get plenty that are 0-15psi, but I need one that goes to at least 60psi as the stock pressure should be 43 psi when the ignition is on for a GTR.

[Steve]

do you need one of these if you're running bigger injectors (550cc) and a 044?

Bai suggested Iget one to raise base fuel pressure to 3KG, as it will assist in making the car more responsive.

Also, if you have Sard 550cc injectors, they are rated at 550cc at 3.05kg, at stock pressure 2.55kg, they are around 510cc. they also have a bit more lag than the stock injectors, I have +0.08ms correction for mine and they run sweet, but this is at 2.55kg - havent upped the pressure yet:) soon.

[PSI_GTSII]

I have just fitted a rising rate reg to my RB30.... a fuel injector 'cleaner guy' was out today fixing a Leaky injector I had and was shocked at my fuel pressure...apparently 100kpa at idle...!

He bypass'd the reg and got it down to 50Kpa, where it ran smoother...

What pressure should it run at idle?

[Steve]

100kpa is only 14.5lbs or 1 bar. What does the VL normally run?