TeamSwift

Home of the Suzuki mini-compacts ! Your Home for all things Suzuki Swift, Geo Metro, Holden Barina, Chevy Sprint, Pontiac Firefly, and Suzuki Cultus. TeamSwift is a technical performance oriented community!
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Underbody braces, turbos and more!

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PostPosted: Sat Aug 01, 2015 10:31 pm 
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Joined: Tue Oct 28, 2014 6:37 pm
Posts: 62
Location: Antigua and Barbuda
Hi all. I have a mk3 swift gti with cultus headers, 2" press bent pipes, no cat or resonator, welded to the factory muffler. How restrictive is the factory muffler? Do you think it hurts my topend power? Whats the story on back pressure?


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PostPosted: Sun Aug 02, 2015 8:48 pm 
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Joined: Thu May 12, 2011 10:08 pm
Posts: 625
Location: texas houston
I love the factory muffler, but i have not seen any dyno sheets as a proven fact, on performance gain or loss. Needless to say the cultus muffler looks the same.


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PostPosted: Thu Sep 10, 2015 8:51 am 
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Joined: Fri Aug 21, 2009 3:07 pm
Posts: 56
Location: Sacramento CA
Havent done any dyno testing, but when I have my full 2" exhaust done, we have to use a cat here in Cali and I use those large stainless mufflers at the end with the removeable silencer, opens it up and sounds good, if you want it quiet I just stuff the silencer with stainless steel wool till i meet the required level.

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