Emissions codes????
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Teching In
Joined: Apr 2009
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Emissions codes???? I have a 2001 Camaro z28 and I'm getting emissions codes P0174 and P0171 I'm running a SLP maf sensor and air box the check engine light was on with these codes but when I unplugged the maf sensor with the car running the check engine light went out but I still have the codes any HELP? THANKS
Those codes are caused my the LTFTs being over +20%. Much of that is probably caused by the SLP MAF. There could be other reasons like a vacuum leak downstream of the MAF or low fuel pressure. If you thing you need to run that 85MM MAF, then cut the resistor out of it that SLP added to try and make it compatible with the stock calibration and have a tuner put the correct values in the MAF table for that sensor. Or just put the stock MAF back on it. You still have just a 75MM opening in the intake manifold.
