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When you remove AIVs, you lose your vacuum source into the exhaust. Vacuum is created by the action of the reed valves in the AIVs. Suggest you test you system by removing your PCV intake filters and checking for suction. I'll bet there is none. Also for anyone having cats in place, this system could cause a cat meltdown if oil gets dumped into the exhaust and gets burned in the cats. If no meltdown occurs, carbon fouling could be a problem. In any event, oil would not be good for the cats. Not a problem if no cats. As already mentioned, this mod may not solve the exhaust smoke problem. Just a few things to think about.
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