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I am running a Walbro 255 pump.....I really doubt it's the FPR, as Aeromotive makes top of the line shit, and this happened with BOTH the Nismo FPR and Aeromotive now.....
I would say probably 90% of the time, at idle it reads 36 psi.
The other 10 % of the time it reads 30 psi.
When I BEAT on the car hard, my knock sensor on my PFC is almost always below 20.
Maybe 1 out of every 100 (or maybe even 200) times that I floor it and get full boost and full load, I see the knock sensor go up to 40+.
....and that is with my boost pressure being pefectly controlled with AVCR.
That only leaves inadequate fuel supply (relative to what the map is telling it to feed) as the cause.
1) I need to run my FP gauge into the car to make sure that my FP is going up 1:1 with boost.
2) I need to check voltages at the fuel pump when I see low FP at idle (which is tough, bc it happens so INTERMITTENTLY).
This is just a pain, bc the problem is so intermittent.....I am guessing fuel pump or voltage drop due to wiring.....may try wiring it on it's on power wire or whatever that mod is.
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Daily driven
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