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hey, is there any benefit of just changing the muffler instead of an entire exhaust system? i wanted to change it to magnaflow.... thanks
 

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I notice some gains when I had a staight through 3" but now that I have cats, it is back to the doggish top end.:(
 

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A cat-back...should give you 2-3 hp...average. The muffler itself only increase a bit of flow and mostly sound....but that's it.
However, if you get header, test pipe and a good cat-back, you'll notice the difference (maybe 15 hp or so ?!?!)
 
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