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Originally Posted by 313green
It sound like that on first start but not during driving. Less "bubbly". It runs strong. You guys are freaking me out. Could the install cause damage? It was an easy straight swap.
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No damage by the muffler install. Just sounds like a mis-fire or exhaust valve slight leak? It may be just running a bit lean? When you open up the exhaust as you did you can really hear things a lot more than with the stock muffler. Just suggesting you check things out, that burble you hear at idle is not normal on a stock motor.
Is this a 3.0L SC?
I'm sure others will chime in.