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backfiring.....help! 700

posted by  someone claiming to be JohnB on  Mon Oct 21 01:18 CST 2002 [RELATED]

read the FAQ, but it sounds like vacuum leaks, check the big hose from the amm to the compressor. If you have a pre-90 Garret turbo with the separate compressor bypass valve it could also be loose bolts on the cbv allowing boost to escape (look for big clouds of black smoke behind you as the amm senses big air flow but it doesn't get to the engine...).






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