’06 Malibu w/ V6: I noticed over the past year that the exhaust system has become noisy and sounds like there is a leak (louder than usual as if I put in an aftermarket muffler). Looked underneath and see an apparent gap between the flex pipe and the tail pipe behind it. Might be other leaks, haven’t gotten that far.
Recently when driving on the freeway, I noticed a substantial struggle to get above 2k rpms no matter how much I accelerated. Seems to me there is an exhaust restriction. My question is – the restriction must be either one of the cats or possibly the muffler? (I’m aware of the infrared thermo test on the cats, but I’m assuming ultimately they’ll have to be removed and inspected to confirm if any of them are blocked.)
The leak seems less problematic and mostly just annoying, will address that regardless.
- This topic was modified 3 months ago by Casey C.
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