B16, B18, B20
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By boomdiggity86
#358753 What's up I'm running b18b boosted but for some reason once in a while if I get on it and let off the idle bounces from 900 to 1500 almost 2! I think it's a vacuum leak on the manifold or the pvc valve but I cant seem to trace it! Any suggestions?
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By TrailerTrash
#358754 probably the IACV