I just mounted an Edelbrock pumper on my 07 650l and took it for a test ride. It was great with one exception, I could not get a wheelie in second gear. During my test ride I noticed that it was still popping on decel and noted that that means a lean condition. I richend the bottom end and went for another test ride with the same results, no second gear power wheelie. I've read and read that people that put the pumper on their L that all it takes is blip of the throttle and the wheel come right up. I still have the stock 15/45 gearing, run a Uni and a Q2 muffler and the air box is vented. Any ideas?? Thanks in advance,, OZ.