lnkncontiverto
Feel my Pacifists-of-Fury
- Joined
- Jun 19, 2008
I've only had my car on the road with my new combo for a few hundred miles so I haven't turned the wick up yet, just to make sure everything is working properly. Boost is set at 18psi currently, with alky.
Fuel pressure is set where it should be at 43psi (line off), which should put it at 38psi (line on). Starting the car cold, everything is where it should be. The problem I am noticing is that once the car gets fully warmed up, the fuel pressure drops down to as low as 32psi (line on) at idle. I have noticed that sometimes when I go WOT I see a touch of KR (0.7degrees).
My FPR, BTW, is one of those older units with the billet top and the stock Bosch bottom end. I picked it up used, but everything has worked well for the first few hundred miles.
I don't think I have any vacuum leaks, I'm seeing voltage of 13.7 or higher on my SM, my walbro fuel pump (new) was confirmed by Full Throttle to be from the 'safe' batch, and everything is dandy when the car's cool. Is this a failure mode for a fuel pressure regulator? or should I look elsewhere for why I'm knocking and have a low pressure reading? I'm anxious to get this sorted out so I can get it tuned for higher boost. Thanks!
Fuel pressure is set where it should be at 43psi (line off), which should put it at 38psi (line on). Starting the car cold, everything is where it should be. The problem I am noticing is that once the car gets fully warmed up, the fuel pressure drops down to as low as 32psi (line on) at idle. I have noticed that sometimes when I go WOT I see a touch of KR (0.7degrees).
My FPR, BTW, is one of those older units with the billet top and the stock Bosch bottom end. I picked it up used, but everything has worked well for the first few hundred miles.
I don't think I have any vacuum leaks, I'm seeing voltage of 13.7 or higher on my SM, my walbro fuel pump (new) was confirmed by Full Throttle to be from the 'safe' batch, and everything is dandy when the car's cool. Is this a failure mode for a fuel pressure regulator? or should I look elsewhere for why I'm knocking and have a low pressure reading? I'm anxious to get this sorted out so I can get it tuned for higher boost. Thanks!