Ive been doing a lot of reading on the deceleration after doing 22 cent mod or on the klr650 in general. Ive adjusted the needle to the best possible spot on my bike. great acceleration and running temps. Its taken a while but Im there. My question is. Is there a difference between deceleration popping and backfire? I get no backfire but usually at lower rpms when down shifting i get a bit of popping sound. My old bike did it all the time and I never cared,but I guess I kinda Got caught up in the subject being its a new klr!