When I bought my brand new Buell XB12 back in 2008 in ran like crap. Stalling and misfires at any temperatures, really not driveable. It took Thunderbike about two months and hundreds km's of test riding to make it running good enough to give it back to me. And when I got it back after all the time, it ran as good as an untuned FTR fresh from the dealer today .Does that happens often with other bikes?
I installed a Booster Plug at the beginning of the summer in combination with a cat delete.