Well I was reading good input for others, I was wondering what muffler anyone would reccomend for a CVT Mini. Weight is a factor as well as the low end accelleration that the cvt lacks.

 

It makes no difference if you have a MC 5 speed or CVT.

Popular exhaust choices are:

Helix- more power up to 8 HP, well made, and might be a bit louder than most. $549
http://www.helix13.com/html/products/exhaust.htm

Rspeed-well made and designed, not quite as much power but less loud although louder than stock. $458
http://www.rspeed.net/mini/item.asp?...p;prod=M20-105

Remus- try MossMini- harder to find and in close out, $419 for single muffler version. See Gabe Bridger's review
at http://www.bridger.us/mini/exhaust/
http://www.mossmini.com/Shop/ViewPro...eIndexID=36724

Most MC exhausts are single and hence weight doesn't vary that much. A few pounds here or there has minimal effect.
None of the exhausts should help much for low end rpm power but maybe from 3000 rpm to mid range and higher you'd get some power difference. In the MCS for low range rpm power you really need to lighten the wheels, add the Pulley and ECU for the most effect. It doesn't really have to do as much with the exhaust.
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ALOHA