I forget what i did on my 05 883 but, my Sister in law just bought a 2006 1200L, I told her i could bore the baffles out of the pipes but i don't remember if i did the jet and the air cleaner at the same time... If i just do the pipes will i just lose a bit of back pressure....Is that when you can start getting a lot of backfires?

I appreciate any advice ....
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