Apologies if this question was asked and answered previously. Put V&H Big Shots on last week. Runs and sounds great. Planning to put on the HD Heavy Breather Kit today and after reading the instructions am wondering if the warnings are a little "over the top" with regards to recalibrating the ECM before starting the bike. I plan on having the dealer do so within a 100 miles or so but want to get it on and ride it a bit first. Any advice is appreciated.