So here's my deal. A few years ago I had an 09 with a two bros slip on and that was it. All I had to do to get it to wheelie was open the throttle around 4000 rpms no problem. I recently just purchased a 2010 special edition that only has an M4 slip on and 55 rear tire as opposed to a 50. I can't get this thing to rise up at all! Is there anything I should tweak or play with to get more low end power out of it? Or is it designed this way and I just have to buy a power commander to go with the exhaust upgrade? It's only blowing my mind since my 09's front tire never wanted to stay on the ground while romping on it and I figured this one would be the same. Plus, any tips for power that are free mods I can do myself would be more than appreciated!