ID1000's -> fuel rail fittment
#21
SADFab Destructive Testing Engineer
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@codrus was the one who had issues. He is also running a returnless.
It probably isn't a big deal with the fpr close to the rail, but you need a fuel pressure sensor to be sure.
It probably isn't a big deal with the fpr close to the rail, but you need a fuel pressure sensor to be sure.
#22
What are everyone's thoughts on running fuel rails without dampers?
I haven't had one for 2 years an haven't seen any issues, though my engine doesn't idle well at the bet of times. My understanding is that most aftermarket FPR's have some damping anyway although it's not located at the fuel rail. Anyone have some more info on it?
I haven't had one for 2 years an haven't seen any issues, though my engine doesn't idle well at the bet of times. My understanding is that most aftermarket FPR's have some damping anyway although it's not located at the fuel rail. Anyone have some more info on it?
#23
@codrus was the one who had issues. He is also running a returnless.
It probably isn't a big deal with the fpr close to the rail, but you need a fuel pressure sensor to be sure.
It probably isn't a big deal with the fpr close to the rail, but you need a fuel pressure sensor to be sure.
FWIW, this is what the fuel pressure looked like with a Walbro pump, stainless lines, non-return system, id1000s, AEM FPR, manifold referenced, and using an FM fuel rail. The the small factory on-rail damper is installed and the big on-fender damper is deleted. It's the white line in the third graph:
Note that there was no obvious drivability problem in the car, the only reason I know there were 10-15 psi fuel pressure swings is because of the sensor I had installed. Does a return-based system have these same swings? I don't know, I haven't measured one, and AFAIK neither has anybody else on mt.net.
I installed a Radium damper and it completely eliminated the pressure variance.
--Ian
#26
I see fluctuations in the logs of my fuel pressure, however I think it's actually electrical interference rather than actual readings. When I had the wiring temporarily running to the ECU for testing the fuel pressure sat dead flat, but when I wired it up properly the following day the noise appeared in the signal. It's something I've been meaning to fix as it's most likely my CAS wiring that's not shielded properly... I hate electrics!
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