Fuel Pressure Regulator Install?
#20
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Just to make sure you fully understand this....that's the MOST IMPORTANT little guy.
That is connected to your fuel pressure solenoid, or if you're not running one, your intake manifold. This port sees boost pressure while under boost, which is what raises your fuel pressure 1:1 with boost. If that line isn't hooked up or pops off under boost, you'll most likely blow your engine.
Eric
That is connected to your fuel pressure solenoid, or if you're not running one, your intake manifold. This port sees boost pressure while under boost, which is what raises your fuel pressure 1:1 with boost. If that line isn't hooked up or pops off under boost, you'll most likely blow your engine.
Eric
#22
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If you're running an aftermarket fuel rail with an open hole there, yes, that'll work just fine. What's on the end of your rail, to the left of the diagram? Is it just a dead end with no hole or fitting?
#23
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This is what I used to install mine. Pretty good set of instructions thanks to AMS.
http://www.amsperformance.com/instru...structions.pdf
http://www.amsperformance.com/instru...structions.pdf
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is this ever an issue with walbro fuel pumps or does it start becoming a problem with high hp engines with double pump systems, etc?
#29
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Well, I haven't logged fuel pressure in my Evo...I did in my DSM years ago and I needed an adjustable FPR to control the pressure at idle with a Supra pump.
I think the Walbro will slightly overrun the Evo's stock FPR, too, but not too much that you need a new adjustable FPR. Fuel trims will take care of it. That and the dual fuel pump circuit in the Evo can handle larger pumps without the need to upgrade. Maybe someone has logged their fuel pressure with a stock FPR and Walbro on this forum for more definitive data.
The FPR overrun would only become a big issue with double pump and larger pump systems. But, it isn't bad to have control over your fuel pressure, nonetheless.
Eric
I think the Walbro will slightly overrun the Evo's stock FPR, too, but not too much that you need a new adjustable FPR. Fuel trims will take care of it. That and the dual fuel pump circuit in the Evo can handle larger pumps without the need to upgrade. Maybe someone has logged their fuel pressure with a stock FPR and Walbro on this forum for more definitive data.
The FPR overrun would only become a big issue with double pump and larger pump systems. But, it isn't bad to have control over your fuel pressure, nonetheless.
Eric