Lots of backfiring at idle....why??
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I get backfiring at idle and my Ltrims on bank 1 are -3%, on bank 2 they are 25% at idle. Why is this? I have leaned out the car some and I still get it. Any clues?
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I'm guessing it is either an exhaust leak or my intake isn't sealed properly. THat sound right?
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Do you have the coil pack harness reversed?