Fuel System question for boosted cars
09-03-2013, 10:52 PM
#16
Addict
Rennlist Member
Rennlist Member
Got a serious stutter right now from one injector not firing, but that's a different issue.
George
90 S4 Grand Prix White (Murf #5)
94 GTS 5-Speed Midnight Blue
06 Cayenne S Havanna/Sand Beige (PASM)
http://928.jorj7.com
09-04-2013, 12:37 AM
#17
Rennlist Member
Thread Starter
1. Ditch the BEGI - they suck, the VORTEC FMU is much more reliable.
2. With L-Jet, the fast way is to replace one of the regulators is with a dampener from an 85/86. It's a direct bolt in.
Your car should run 100% stock until boost comes on. This means no need for an adjustable regulator, just the stock one is needed and an FMU dialed in for the amount of boots.
I would so pick up boost directly from the plenum, not the throttle body, to "feed" the FMU.
I would also have a boost gauge tee'd into the same line.
This is an "early warning" system that your FMU is not seeing boost if the gauge is reading zero.
2. With L-Jet, the fast way is to replace one of the regulators is with a dampener from an 85/86. It's a direct bolt in.
Your car should run 100% stock until boost comes on. This means no need for an adjustable regulator, just the stock one is needed and an FMU dialed in for the amount of boots.
I would so pick up boost directly from the plenum, not the throttle body, to "feed" the FMU.
I would also have a boost gauge tee'd into the same line.
This is an "early warning" system that your FMU is not seeing boost if the gauge is reading zero.
