Staight Pipe
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Senior User
Joined: Oct 2004
Posts: 420
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From: Bonney Lake, WA
Staight Pipe
Right now I have the 4in afe exhuast system with single out. My question is, what difference would removing the muffler make? Im guessing it will make it louder, which i am looking for, but performance wise, would there be a difference. Another question for anyone in washinton state. Have you removed the muffler and did you have any problems with emmisions?
Last edited by wolfe1104; Aug 6, 2006 at 08:54 PM. Reason: I cant spell and have no grammer
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Joined: Jul 2005
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From: 21791
power difference, no. sound difference, HELL YES! 
you will get alot more turbine whistle and more fluttering of the exhaust pulses. to try it out, disconnect the exhaust from the front of the muffler back. start it up and rev it a few times, maybe drive around the block once or twice. you will be hooked.
i have a muffler delete pipe in aluminized 4" that i have sitting on the shelf because i dont have piping back that far anymore. if it's the same size as a MBRP muffler (believe it's 30") then you can take it off my hands.
you will get alot more turbine whistle and more fluttering of the exhaust pulses. to try it out, disconnect the exhaust from the front of the muffler back. start it up and rev it a few times, maybe drive around the block once or twice. you will be hooked.
i have a muffler delete pipe in aluminized 4" that i have sitting on the shelf because i dont have piping back that far anymore. if it's the same size as a MBRP muffler (believe it's 30") then you can take it off my hands.
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
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From: Concord NC
Word of caution here, It may/will have a adverse affect on you fuel economy. You will find yourself making harder acceleration, especially in town and around any close structures on right side of the road . You might even get caught shifting to neutral at a light and revving engine if a rice rocket winds up at the right place. You will also find yourself riding around in 100 degree temps with air cond. wide open and windows down. So yes, in that aspect it does affect performance. As far as emissions, exhaust emissions will be the same with or without a muffler. Now noise emissions, that's another story.
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Post Fiend
Joined: Jun 2006
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From: Central, Al
Well i'm screwwed i am going to do the MBRP 4" duals muffler delete so it wont matter what side of the road its on....Oh well so much for fuel economy
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Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
Originally Posted by amiller93
Well i'm screwwed i am going to do the MBRP 4" duals muffler delete so it wont matter what side of the road its on....Oh well so much for fuel economy
AAHHH, but the stereo effect will be awesome!!!!!
Last edited by zx250; Aug 7, 2006 at 01:51 PM.
Of the next Riffraff East
Joined: Oct 2004
Posts: 8,679
Likes: 2
From: Concord NC
Originally Posted by strokin_it7.3
the two pipe deal is so much better sounding instead of the single-exit version. i dont want to fill up again because my mileage will suck (even more 
) with the vertical duals...
) with the vertical duals...
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Senior User
Joined: Oct 2004
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From: Bonney Lake, WA
Originally Posted by strokin_it7.3
did you get my PM? 