(Mainly asking about the Challenger) Has anyone who has installed aftermarket slip-ons without the stage one "flash" or some type of tune, experienced any issues? I have installed the TAB Zombie baffles and do not have the stage one intake, hopefully that's coming soon (just gotta work some overtime). This is the only performance add on to the bike. I haven't noticed any difference in performance, but the bike has shut off on me twice while coming to a stop and holding in on the clutch. I love the sound of these slip-ons, they really wake this machine up. I've put about 300 miles on the bike since adding these and other than the 2 times the bike has cut off I have no issues or complaints. Not sure if this was due to the slip-ons or not because the bike has cut off on me one time before adding them. I have about 4,000 mile on the bike. Just curious if anyone has had any issues or suggestions.