I put the QC baffles in my 2013 electraglide that had a Stage 1. You gotta get rid of the CAT which causes the bike to run too hot. Then you need to do some fuel management or it will be too lean. I did V&H monster rounds with a power duals headpipe. The problem is the bike then had a high range bark that gave me a headache. Installed the baffles and viola, it quieted it down in the sharp top end just enough that is sounds like a harley. It did not require an additional remapping beyond that done with the stage I.

 

kicks you will have better luck starting a new topic, and giving the year and model of your bike. or dare I say, try using the search feature.