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muffler change

928 views 3 replies 4 participants last post by  starspangled6.0 
#1 ·
will there be any power increase or gas milage increase by just changing the muffler and leaving the rest of the exhaust stock
 
#4 ·
+1

I did just a muffler swap on my truck, and it seems the engine is more responsive, but nothing to write home about. It didn't change my MPG rating, either. Sounds great, though :)!
 
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