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Discussion Starter · #1 ·
I currently have a 4" exhaust w/ 6" tip, was wondering how much louder it would sound if i removed the muffler. Do any of you have similar set up? Does it sound alot louder outside and inside cab? Would it set off my check engine light? Just want to know as much detail before doing it. Thanks
 

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i removed my muffler, not much increase inside cab if its welded togather good, and sounds great out side (turbo really sounds good) my LB7 threw no codes and did not have the cat/soot collector. -do it
 

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I Removed My Cat And Muffler.just Straight Pipe Now. The Truck Runs Real Well And The Turbo Spools Better Too. Sounds Great And Not To Loud. If You Are Worried About It Being Real Load Dont.the Turbo Acts A Little Like A Muffler Because The Exhaust Flows Through It And Quiets The Noise.do One At A Time, Muffler. And If Not Enough Do The Cat Too. I Gained Mpg's As Well
 

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I' d go cat then muffler. JMO
 
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