Fuel Pressure Regulators

[Adz2332]

Hey all

Im in the middle of putting my GTR on E85

Have some 1000cc injectors and the E85 Walbro pump coming.

Have the normal blot ons with -5s

Wanting to see near 380 to 400kws

The question is will a fuel pressure regulator and gauge be and benifet for what im after?

Thanks

[GTSBoy]

The only time a different fuel pressure reg is useful is if the original one is too small to pass the whole flow of the pump back through it without the pressure having to rise above the setpoint.

If the original one will pass the fuel back and still keep the pressure down at the setpoint, then it is good enough.

The only other reason to have a different one is if you need/want to adjust the fuel pressure to some other value. But given that we have access to suitable size injectors at decent prices these days, old skool dodgy tuning tricks like whacking up the fuel pressure are (rightfully) frowned upon.

A pressure gauge is semi useful. 99.9999% of the time you won't look at it and it won't move. The day that your fuel pump dies and you have a lean out and destroy your engine, you won't look at it but it will have moved. They are definitely useful when setting up to dyno and tune to make sure everything is working and they are useful when trying to troubleshoot. But they don't need to be installed permanently to achieve those goals.

Edited June 27, 2013 by GTSBoy

[Hanaldo]

Fuel reg also useful with an aftermarket rail. Which in itself is ultimately pointless haha. I just wanted to join in