Muffler
Mountain Pass
Joined: Jun 2006
Posts: 187
Likes: 8
From: Texas
No joke, unless your somewhere where a loud exhaust can get you ticketed, I'd just straight pipe it.
That's what I did. Nice rumble sound, then turbo whistle, then exceedingly loud when your hot ******* it.
ETA: I bought an aluminized steel straight pipe kit from AFE. It's the AFE Atlas system, comes with 3.5" down pipe, then bellows out to 4".
Mountain Pass
Joined: Jun 2006
Posts: 187
Likes: 8
From: Texas
Before I put my exhaust on, me and a friend cut the exhaust off before the cat. It was loud and poppy and sounded terrible.
After piping it out the back like factory, its not loud in the cab at all.
Laughing Gas
Joined: Aug 2007
Posts: 1,132
Likes: 0
From: Baldwin, ND
Thad
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Laughing Gas
Joined: Jun 2011
Posts: 780
Likes: 5
From: Kentucky
Yup if your states doesn't do smog checks I would ditch the cat also.
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Mountain Pass
Joined: Jun 2006
Posts: 187
Likes: 8
From: Texas
Texas emissions laws are exempt for diesel equipped vehicles. Only a safety inspection required.
That being said, you can be ticketed in Texas for excessive exhaust smoke if your tailpipe smoke doesn't clear after 10 seconds.
Laughing Gas
Joined: Mar 2011
Posts: 1,229
Likes: 1
Maybe, but if you do that, hold on to the cat. They're not cheap and you never know when you might move to a state or city that requires one.
Senior User
Joined: May 2006
Posts: 119
Likes: 4
From: Wichita, KS
My wife just recently bought an 04 F-250 6.0 and it had the exhaust cut off right before the cat. Sounded like **** and ran even worse (not to mention the underside covered in black soot and a filthy mess to work on). I took the stock exhaust system my son in law had cut off his 06, TIG welded it back together and hung it on my wife's 04, sounds normal now and runs much better IMHO.
Post Fiend
Joined: Aug 2010
Posts: 13,710
Likes: 5
From: Manchester, CT
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