Good afternoon, I have a 2012 Road King with the 103 in it. I recently installed a pair of Rhinehart 4" slip ons and it seems to pop and make a sound like blow back I guess is a way to describe it when I let off the gas. Everything was tight after I installed them and nothing rattled. Is this normal until the exhaust "break in"? Thoughts? More questions for me?

Thank you

 

Sounds like you need a tuner.

 

I put XIED's on my 2012 FLHX. Makes your bike run a little richer, while running freer flowing pipes. http://nightrider.com/ I will get a tuner, but for now runs pretty good.

 

I used XIED's on my slim an they helped some but for around $320 you can get a fuel pack 3 from V&H an tune it with your phone an you'll have it for any future changes. If you think you might want to make more perfromance mods later like cams or might want a profession tune instead of a V&H generic map for you combo get a power vision.