Hey guys. So I have my 16 gsxs and yesterday I blocked off the pair system using the ball bearing technique (I actually used a 270 bullet casing as it fit snug in the hose) and reloaded the Uk map on my pcV. Went for a ride today and found my m4 exhaust is popping alot on decel. I'm hoping the auto tune will sort this out, but has anyone else had popping and a stumble in the lower rpms in 1st and 2nd? Were you able to adjust the pcV to smooth it out and stop the popping.