In 2012 I traded in my 2003 V-Rod that was tuned TTS Mastertune (black) by Skips Speed & Customs Cycles in Winchester, VA. I retained the TTS Mastertune module and box per the dealership as it could be a liability to the new owner of the bike.

I can send this unit back to TTS and for a fee of $200 (TTS p/n 2000007) I can upgrade from single to dual license, in which I would use on my 2012 Street Glide.

I would like to get an understanding of what would be the difference/benefits between TTS I and TTS II?

Thanks in advance.