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This is a little different but I would assume that the performance would be comparable to the Mugen Si's exhaust.


http://www.kingmotorsports.com/category.aspx?cat=64


"Mugen's Sports Silencer for the new 2006+ Civic Si 4-Door is made from premium grade 304 Stainless Steel. The system produces a deep and mellow tone and features a smaller slash cut tip for the sleeper look. 8whp gains can be expected. System comes complete with all hardware and gaskets required for installation. Also includes the exclusive "Mugen Equipped" metal emblem."
 

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This is a little different but I would assume that the performance would be comparable to the Mugen Si's exhaust.


http://www.kingmotorsports.com/category.aspx?cat=64


"Mugen's Sports Silencer for the new 2006+ Civic Si 4-Door is made from premium grade 304 Stainless Steel. The system produces a deep and mellow tone and features a smaller slash cut tip for the sleeper look. 8whp gains can be expected. System comes complete with all hardware and gaskets required for installation. Also includes the exclusive "Mugen Equipped" metal emblem."
I don't believe this to be correct...the factory mugen exhaust has no power gains...the one from king is the true mugen cat back...totally different products.
 

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On the website it says "axle-back" not cat-back. Could be two totally different products though.

I am quoting from the website about the gains.

The cat-back is for the Type R. Look about it for the Si 4-door.
 

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I read in a magazine that honda claimed the mugen exhaust freed up 5hp but they didnt change the rating of the hp on the mugen si. If the mugen si does have a full cat back, then it should atleast free up a couple ponies but the axle back shouldn't.
 

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IBstolen... ;)
 

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Stop this Mugen $$$$ riding stuff its an overpriced axelback that offers maybe slightly deeper sound like every 1 else has said its not worth it go with a proven after market cat back for power not this because it says Mugen on it so sick of hearing that word at this point.
 
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