What is a BMT??
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Laughing Gas
Joined: Jan 2005
Posts: 920
Likes: 7
From: Mazon, IL
What is a BMT??
I see a lot of you guys talking about getting a BMT installed and having problems with the 3-1/2" exhaust. What exactly is a BMT and why are so many of you installing it? Just curious
Posting Guru
Joined: Aug 2005
Posts: 1,768
Likes: 1
From: Central Alabama
You mean a BTM? Big Truck Muffler. The stock exhaust is 3.5 inch and the BTM has 4.0 inch inlet and outlet. So adapters are needed to fit the muffler properly. Its just a larger free-flowing muffler.
Posting Guru
Joined: Jan 2006
Posts: 1,605
Likes: 1
From: Elkhorn, WI
it is just a less restrictive muffler for lower egts. personally i would just cut out the stock muffler and put in a piece of 3 1/2 inch pipe and not worry about adapters and it will sound much better straight piped
Post Fiend
Joined: Jul 2005
Posts: 14,582
Likes: 12
From: 21791
Well, you know that is smaller than stock size. I dont know how much more of a restriction that is, but smaller pipe leads to more backpressure right?
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Posting Guru
Joined: Aug 2005
Posts: 1,768
Likes: 1
From: Central Alabama
You know Kris, I think your right! I think it is 3.5! My bad dmueller71! The offset of the stock muffler is what made the BTM so difficult to DIY. Thanks for the correction.
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