Quote Originally Posted by ShuBen View Post
The above shown is nothing but a pipe with diameter larger than the bended front pipe. No other interior in the muffler. It has a nice dark sound and especially with my 300cc kit it helps to breath freely.
Surprisingly the fuel consumption didn't increase

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Is that 300cc kit for the X2? If so, do you have a link or how you did it? I'd definitely be interested in that.