PFC and fuel cut?
Thread Starter
Joined: Apr 2001
Posts: 4,830
Likes: 14
From: Eugene, OR, usa
PFC and fuel cut?
Hey guys I'm helping out a fellow rotorhead and we can't figure out this problem.
The FD is fairly well modded but the problem is simple, at about 13psi it cuts out, doesn't matter what RPM. It feels EXACTLY like fuel cut.
Any settings on the PFC that need to be looked at?
Mods:
Upgraded twins
HKS ignition
Full exhaust
Intake
IC
PFC and enough fuel to make the whole thing work.
Engine harness is BRAND NEW, same problem before and after install.
The car runs great, if you modulate the throttle it is pretty fast as long as you keep it below 13psi.
Ideas?
The FD is fairly well modded but the problem is simple, at about 13psi it cuts out, doesn't matter what RPM. It feels EXACTLY like fuel cut.
Any settings on the PFC that need to be looked at?
Mods:
Upgraded twins
HKS ignition
Full exhaust
Intake
IC
PFC and enough fuel to make the whole thing work.
Engine harness is BRAND NEW, same problem before and after install.
The car runs great, if you modulate the throttle it is pretty fast as long as you keep it below 13psi.
Ideas?
Joined: Oct 2003
Posts: 11,576
Likes: 27
From: Morristown, TN (east of Knoxville)
Ah, nevermind. I was thinking that the stocker might be maxing out and pissing off the pfc, the manual even mentions this though it doesnt say what action the pfc takes when/if this happens.
Thread Starter
Joined: Apr 2001
Posts: 4,830
Likes: 14
From: Eugene, OR, usa
Originally Posted by books
with the 3 bar the PFC only uses the primary setting, if you exceed the setting by approx. 3.6 psi you'll hit fuel cut
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Yeah, I do know the PowerFC does have a fuel cut setting. I haven't messed with PFC's much, but I believe you set a boost level in the unit, and so many PSI past that level you'll get fuel cut.
Dale
Dale
Lives on the Forum
Joined: Dec 2001
Posts: 14,716
Likes: 10
From: San Lorenzo, California
Jeff, the PFC will fuel-cut if you go 0.25 kg/cm^3 over the "target" boost level. Even if you are running a separate boost controller, the "target" boost setting must be set to above what you want to run. I advice setting the "target" boost to the absolute maximum the car can handle, that way you still have a minimum of overboost protection but it won't interfere in hard driving.
The other potential issue is that the PFC is not configured properly to handle the 3-bar MAP sensor, look in the PFC forum, there's a few good write-ups by the PFC experts on how to do this.
The other potential issue is that the PFC is not configured properly to handle the 3-bar MAP sensor, look in the PFC forum, there's a few good write-ups by the PFC experts on how to do this.
Thread Starter
Joined: Apr 2001
Posts: 4,830
Likes: 14
From: Eugene, OR, usa
Originally Posted by rynberg
Jeff, the PFC will fuel-cut if you go 0.25 kg/cm^3 over the "target" boost level. Even if you are running a separate boost controller, the "target" boost setting must be set to above what you want to run. I advice setting the "target" boost to the absolute maximum the car can handle, that way you still have a minimum of overboost protection but it won't interfere in hard driving.
The other potential issue is that the PFC is not configured properly to handle the 3-bar MAP sensor, look in the PFC forum, there's a few good write-ups by the PFC experts on how to do this.
The other potential issue is that the PFC is not configured properly to handle the 3-bar MAP sensor, look in the PFC forum, there's a few good write-ups by the PFC experts on how to do this.
.
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