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Mk5 General Area / Re: Squeal after cat change
« Last post by blake on August 14, 2026, 10:34:25 am »Just thought id put an update here in case anyone has similar problem in future. I changed the hose from pcv, had it run again on smoke test, nothing found. Car boosts fine so the garage I used suspected it being the way the cat sounds as its aftermarket.

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