Quote:
Originally Posted by Langcow1
Ok thanks everybody. So regardless of the age and mileage, there’s no need to replace the muffler until it’s having a problem? I mean, it’s not something you just routinely replace every 50,000 miles or something?
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Muffler doesn't affect performance. I'd be worried about the catalytic converters being clogged. Optimizing air fuel ratio is your goal..