Just finished break in, and man this motor is sick! I haven't even dialed it in all the way because it's dark, snowing, cold and my cul de sac has too many puddles (an accident waiting to happen). Just bashing around and running some sprints, this blows the 2.5 away! I put about 3 tanks through it with no break. Starting and stopping - hot or cold - was a breeze (i kept all the ez start gear and am still using the stock exhaust).

The only problem I had was making sure my gear mesh was perfect. At first I had it too tight and the Sirio had it buzzing, so I quickly adjusted it. Other than that, I wish this motor came out early this past summer!

I was doing stand still doughnuts and steering out of them into wheelies on wet ground!

If anyone is thinking about getting this motor, I can vouch for it.

Of course now I have to change my whole setup to accomodate this new powerplant. But, that's half the fun.