I am confused at this moment. When buying my turbo kit and all the electronics that go with it I forgot to add an SFMU. Now, everything is installed and working. I have an FJO wideband o2 sensor with the LED display. My question is this: I have boosted as far as 8 psi with 45 psi of fuel preassure. Still, my o2 sensor show a reading of 12 at 8psi. What the hell? I bought the vortech sfmu and its on its way, arriving probably on Monday or Friday. Thanks for any input
#61411, "RE: Yet another Fuel preassure thread...." In response to Reply # 0
Originally posted by TXTurboGS I have boosted as far as 8 psi with 45 psi of fuel preassure.
If you still have stock injectors that is not good, shit even with 440's I think that's still low. Don't boost till you get the SFMU. Do you have an EGT gauge?
1999 Black w/black leather GS 10th Anniversary OZ edition 5 speed Modz: HRC Stage 2+ 16G turbo Viper 650.2 components Image Dynamics IDQ12 sub Avionixx 600.4 amp
#61428, "RE: Yet another Fuel preassure thread...." In response to Reply # 2
with 440cc injectors you should be around 60psi of fuel at 8lbs of boost. if your wideband is reading 12 at WOT, you are way too lean. don't boost or BOOM (eventually)
#61451, "RE: Yet another Fuel preassure thread...." In response to Reply # 3
siueclipse are you sure 12 on a wide band is way to lean. I was at a dyno today and they were shooting for a 12.5-13 on a supercharged mustang. I think 12-12.5 is right on for a/f on a forced induction vehicle but I am not 100% sure. Patrick 96 GS 14.14 @ 96.5 mph on 8psi 8 Nov.02 HRC kit, S20G, FMIC, Howell bottom end 8.6 pistons, S-FMU, Blitz BOV, P&P head, SS valves, lots more little goodies
#61470, "RE: Yet another Fuel preassure thread...." In response to Reply # 4
Originally posted by mitsudsr siueclipse are you sure 12 on a wide band is way to lean. I was at a dyno today and they were shooting for a 12.5-13 on a supercharged mustang. I think 12-12.5 is right on for a/f on a forced induction vehicle but I am not 100% sure. Patrick 96 GS 14.14 @ 96.5 mph on 8psi 8 Nov.02 HRC kit, S20G, FMIC, Howell bottom end 8.6 pistons, S-FMU, Blitz BOV, P&P head, SS valves, lots more little goodies
you are totally wrong.
12 is borderline lean.. anything could cause a BOOM
Search
Printer-friendly copy
0 Users in Chat
