Originally Posted by HickOnACrick
Okay, I am a bit embarrassed to admit this, but I have had my SE for over a year now, and it has always popped and backfired when decelerating.
Is there anything that can be done to stop this annoyance? I am running stock jetting, Akros, canisterectomy and SAS removed.
The backfiring was present with the stock pipes, the new Akros, before and after doing the canister/SAS removal.
Raise your needles one position, and adjust your fuel screws to about 2 turns out from lightly seated. The fuel screws may need to be tweaked 1/4 turn one way or the other, but 2 turns should be close. I'm at 800' elevation, and regularly ride to about 4000', with occasional trips higher. 1-3/4 to 1-7/8 works for me.
The rest of my setup is the same as yours, except I have Neptune cans instead of Akros.
Try this before you start spending money on it.
FWIW, I have used the H2W kit, and went back to the above setup. The prefilter wasn't an advantage for me, and the bike ran about the same.