Hi guys, I'm new to this forum but really enjoy it. Quick question: If I remove the CAT out of my 2017 Chieftain Dark Horse do I have to "Re-flash" the bike and or get a new "Tune." The dealer service guy is saying yes and I'm thinking no. They want around $1400 dollars to do all that. I've seen the Youtube videos of guy that have done it and no one mentions anything about have to re-tune or re-flash the bike. Thoughts? Thanks for any help provided.