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Muffler Install on Wednesday

941 views 6 replies 4 participants last post by  teenRam 
#1 ·
I'm having a Flowmaster 40 Series muffler installed this Wednesday. What can I expect after the installation? Any annoying resonance inside the cab? Any obnoxious idle? I want the real aggressive sound on take off, but a moderate idle.... Is the 40 series the way to go?
 
#3 ·
Did you already purchase the muffler? Just something to thing about but you would get more performance out of a straight through type like magnaflow or similar. I know some that just love the flowmaster sound though, and it'd still be a little improvement over stock performance wise. Post a video afterwards :)
 
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