Backfire on Decel

[XcYFZRacer]

My 08 was Jetted dead on for this past summer. It has a Looney Tuned full system, K&N Filter no lid, 185 and 55 Jets. Now that the temp has dropped give or take 25 degrees, when I am coming down hill or hard decel it pops.
What is my best course of action? Fuel Screw or Pilot Jet or Main Jet?

[Ride1Rob]

Pilot

[yfzrider690]

Go up a size on your pilot jet or drop the clip one on the needle. I would try the pilot first. Also make sure that you don't have any air leaks, that will also cause it.

[sand45]

You have a 55 pilot already?....if so turn your fuel screw out...or drop your needle one notch.