I need some good advice on exhaust.I'm getting 4 different opinions from 4 different dealers. I got rush pipes slips ons&nbsp\\;with 225 baffles on my 2007 road king custom. Does anyone have any sugestions on stage 1 download or a fuel pack or the race tuner. I was thinking about going with the fuel pack with a new a/c.One dealer told me I could damage the engine if I did'nt go with the race tuner at a price of 780 dollars any advice would be appreciated.