Well I was talking to my buddy today about tune's and what not, and I just wanted to look into it since I have nothing but a drop in K&N in my car. I read on hear a lot about Wayne and excal and so on. Well I don't know a damn thing about tunes or anything like that. I mean I used to have a Ranger. But I live in Michigan and I didn't know if wayne's tune or whatever was like only around Cali and what not but if you guys could fill me in on how the tune process works, and warranty issues, or how to go back to stock, and how much it costs that would be awesome! Thanks a lot in advance.