Thanks guys, I don't have gauges yet but they are on order, so I have just done short bursts on 100% but this thing kicks butt. I have been concerned about the turbo since I had to have that fixed due to excessive play on the intake side, it was actually starting to rub the housing, makes a zinging noise. The code thing is kinda funny, I pulled the box before I took it in, I was showing the code and had no way to clear it. They cleared it when it was there, Ive ran it about 200 mi. varying between 50% and 100% and still no code. The one thing I have noticed is it seems that out of these responses I think mine is the only automatic. I kinda bought this thing hoping to get some better fuel mileage, and that would still be nice, but this thing runs so good you forget to worry abou mileage.