I am considering the purchase of a Dobeck TFI injection module. I have Rush slip ons w/ 1.75 Baffle and only plan to add a K&N high flow air cleaner.

Is it easy to add on or do I need to take it to a shop?

Will it void my warranty ?

Is the bike too lean running stock except for the Rush slip ons?

If I take it back to the HD dealer for later service will they record that I have a TFI unit and try to avoid any warranty work?

Thks and safe riding