Hello all I've just bought my first bike, the reccomended XVS650 Vstar custom 2009. Of course, the first thing I looked in to was a set of aftermarket pipes, and after some looking around I bought a set of Vance and Hines' short shot staggared. Overall, the system sounds great, but (and I had anticipated this) there is a small amount of backfire. I phoned around a bit, and one mechanic told me that it was just a simple adjustment to the carbuerators and the backfiring would cease. Another mechanic said I had to purchase a rejetting kit, hypercharger, V&H fuel controller, and get him to install all that and give it a dynotune, but still no guarentees that the backfiring will cease with this particular exhaust. I have two opinons, each at opposite ends of the spectrum. Has anybody out there had the same problem and found a solution? Thanks for any help you guys can give.