stright pipe
Freshman User
Joined: May 2010
Posts: 38
Likes: 0
depends on the year. The 03' turbos (as I learned from here) are the loudest I believe. A true straight pipe (catalytic converter and muffler cut out and replaced with straight pipe) makes a high pitched whistle that winds up and down in response to how much you're on the accelerator. Cools things off inside too from what I hear. Anyways, I did it and I like it. definatly makes your truck sound more unique imo. Sounds better than a cummins with a stack the size of a 5 gallon bucket 
It is illegal to tamper with the exhaust and especially converter. If you "do it" don't be hotdogging around town or in the range of a cop. Its potentially a hefty fine depending on your state. I got mine done for $125 at a exhaust shop near by. Its all depends on how you operate the truck once its modded as to whether or not you will be pulled over. And finally, it won't pass inspection so whoever does the straight pipe, tell em to cut out the muffler and or catalytic converter and replace with a straight pipe connected to the existing pipe by two band clamps, then you'll have the option of changing back and forth for inspection or if you get tired of whistling Dixie.
oh yeah and just youtube search "6.0L straight pipe" for a the sound
It is illegal to tamper with the exhaust and especially converter. If you "do it" don't be hotdogging around town or in the range of a cop. Its potentially a hefty fine depending on your state. I got mine done for $125 at a exhaust shop near by. Its all depends on how you operate the truck once its modded as to whether or not you will be pulled over. And finally, it won't pass inspection so whoever does the straight pipe, tell em to cut out the muffler and or catalytic converter and replace with a straight pipe connected to the existing pipe by two band clamps, then you'll have the option of changing back and forth for inspection or if you get tired of whistling Dixie.
oh yeah and just youtube search "6.0L straight pipe" for a the sound
Senior User
Joined: May 2005
Posts: 221
Likes: 0
From: Carson, Washington
I just did mine and it sounds good. It has a big block sound like it has flowmasters on it plus the turbo whistle. Mine definitely sounds more aggressive when towing. It isn't as bad as the cummins straight piped. I like it!!!
Posting Guru
Joined: Nov 2008
Posts: 1,458
Likes: 2
From: CA Sacramento
It is louder but not too loud that the women will not complain. Definitely helps with egts.
I am 100% happy with my cat and muffler delete pipes, ~$120, ~200* egt drop, and I did not lose as much low end compaired to a bigger exh systems.
I am 100% happy with my cat and muffler delete pipes, ~$120, ~200* egt drop, and I did not lose as much low end compaired to a bigger exh systems.
Cross-Country
Joined: Jan 2007
Posts: 99
Likes: 0
Me too the day the warranty runs out I have a mbrp straight pipe system laying in shop ready to go on!
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Hotshot
Joined: Dec 2003
Posts: 15,369
Likes: 121
From: Stuttgart, Ar
IMHO 3.5" downpipe to 4" out the back. Keeps the low end lag down that the 4" downpipes suffer from a little bit.
Posting Guru
Joined: Nov 2008
Posts: 1,458
Likes: 2
From: CA Sacramento
This is why I chose to get the delete pipes, and the price.
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