am I too Fuel Rich???
am I too Fuel Rich??? scanmaster shows 800 on both banks at idle.. front o2 at the shop....on a scan tool
am I too rich of a fuel mixture
??? I am getting ping 
at 4500-6000 rpm at WOT sometimes...but not always...any suggestions???
free "cut the bottom of the air filter/lid area" to make a bigger intake
MAF porting and descreen
bellows(from home depot)
am I too rich of a fuel mixture
??? I am getting ping at 4500-6000 rpm at WOT sometimes...but not always...any suggestions???free "cut the bottom of the air filter/lid area" to make a bigger intake
MAF porting and descreen
bellows(from home depot)
Re: am I too Fuel Rich??? You can't look at O2 voltage to determine whether you are lean or rich. It works on some cars, but on others it is waaaaaay off. You need a wideband dyno a/f meter (like at a dyno shop) to tell you this.
Pinging up top is usually an indication of being too lean, too much timing, or not enough octane.
Good Luck,
Kevin
Pinging up top is usually an indication of being too lean, too much timing, or not enough octane.
Good Luck,
Kevin
Re: am I too Fuel Rich??? When I dyno my car with wideband O2, I check my O2's with Autotap and when the wideband O2 says I'm at 12.8, my O2's are around .925-.950mv.
If your around .800mv (bank 1 sensor 1 & bank 2 sensor 1), sounds like your way lean.
Go put some Sunoco 94 in the car when you get to 1/4 tank and then check it again...
If your around .800mv (bank 1 sensor 1 & bank 2 sensor 1), sounds like your way lean.
Go put some Sunoco 94 in the car when you get to 1/4 tank and then check it again...
Re: am I too Fuel Rich??? so what can I do to Richen it up if I am too lean??? Maybe the GMAF budget mod??? has anybody done this???what is it?? how to do it??? any body got a web link??? 
Re: am I too Fuel Rich??? hmm, you logged your 02's at idle. What are they @ WOT??? They should be between .87mV and .92mV if you are going by a scan master tool.
Lambda reads opposite of onboard 02 sensors. If Lambda reads .800mV then it is too rich. On our onboard 02's, .800mV would indicate a lean condition.
Lambda reads opposite of onboard 02 sensors. If Lambda reads .800mV then it is too rich. On our onboard 02's, .800mV would indicate a lean condition.
