After reading the EPA lawsuit information and seeing how Harley has guidelines to follow on all 2017 and newer bikes as a result, I elected to play nicely.
I installed the SE High-flow air cleaner, SE Street Cannons and SE Street Tuner on my 2017 Tri Glide. I have to say, these are some really nice additions to the M8. The Street Cannons have a nice low rumble at idle and are not overly obnoxious at cruising speeds.
The SE High-flow air cleaner keeps the stock M8 appearance while allowing more air flow.
The SE Street Tuner is an easy to use tuner. Granted you can't make changes like you can with the PoweVision, but you can still tune the VE tables and a couple of other tables. To me that is fine, I really like the plug-n-play system Harley has put together.
I bought everything through Board Tracker HD online for just move $800. For the cost and results, I'm extremely happy and won't have to fear any dealership about warranty should I have an issue on the road.