2 words and 2 names: "Tur" and "bo", "Bill" and "Dedman". He's done it and is willing to talk about the good and the bad. And you can get a turbo for far less than $500 on Ebay, thats just more money to spend on your tune. You can blow 5-6 psi and not even change your timing or fuel delivery, But the wideband IS almost mandatory.