I'm about to pick up an ets v2 exteme catback. eventually I'm going to get a dp and tp but not yet. I believe I remember reading somewhere that as long as I'm not changing the dp or cat that i don't need a tune. Is that true?

 

Hey Idk but I think you're on the wrong thread for this topic but anywho -- I got my turboback installed on my MR and it runs perfect. Haven't gotten a protune either - well except that I've flashed it with the Cobb AC on stage 2. Did you flash yours or its on the stock map?