1
General Buick Tech / possibly leaning out according to wideband?
« on: September 14 2013, 12:28:50 AM »
Just put a wideband in the car today along with a new 3" downpipe. My WOT a/f is anywhere from 10.4 to 12.4..... depending on how fast I am going.
I just did a couple pulls (the car pulls very hard for what it is) and it went from 10.4 to 11.8 in a matter of seconds. It seemed to hang around 11.8 and not go up from there. I did a pull on the highway, and my a/f went from the 10s to 12.4 and hungout there? Am I missing something here, is this normal? I dont seem to be getting any KR I see some points here and there and they go away....I have been fighting false knock for awhile now. It's dark out right now and I can't see my fuel pressure gauge, but I know that I have quite a bit of fuel added (45 line off, 5% added through chip for safety measures, no alky just straight 93 octane) the car has slight bolt ons, including a ta49, 60lb injectors and a tt chip...racetro nix fuel pump and hangar, new fuel filter, adjustable regulator, etc. the wideband is not hooked up to the computer, it is a stand alone system.
14-18 pounds of boost (yeah, the wastegate hole needs to be opened up quite a bit) on straight 93. also have a couple degrees of timing pulled out in 3rd to compensate for the boost in 3rd.
I just did a couple pulls (the car pulls very hard for what it is) and it went from 10.4 to 11.8 in a matter of seconds. It seemed to hang around 11.8 and not go up from there. I did a pull on the highway, and my a/f went from the 10s to 12.4 and hungout there? Am I missing something here, is this normal? I dont seem to be getting any KR I see some points here and there and they go away....I have been fighting false knock for awhile now. It's dark out right now and I can't see my fuel pressure gauge, but I know that I have quite a bit of fuel added (45 line off, 5% added through chip for safety measures, no alky just straight 93 octane) the car has slight bolt ons, including a ta49, 60lb injectors and a tt chip...racetro nix fuel pump and hangar, new fuel filter, adjustable regulator, etc. the wideband is not hooked up to the computer, it is a stand alone system.
14-18 pounds of boost (yeah, the wastegate hole needs to be opened up quite a bit) on straight 93. also have a couple degrees of timing pulled out in 3rd to compensate for the boost in 3rd.