My 2001 Stage 3 S4 has been running bad after it sits overnight, only for about 1 minute or so until it warms up a bit. After I drive it for a few minutes, it idles and runs good all day on startup. I have tried new plugs and coolant temperature sensor. Today I unplugged the MAF and it started great and even seemed more responsive. I have the 034 Motorsport 85mm Billet MAF Housing with a bosch maf element. Could the MAF just be bad? The only codes im getting are bank 1 and 2 running rich. But I have a wideband and its nothing too abnormal. AFR's are still close to where they should be. Thanks for the help
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