Hey bud, I had the exact same problem as you and after a lot of reasearch I decided to do the actuator and waste gate mod (I would highly reccomend XR6Turbo Developments they did a top job) I have done this mod and am still running a generic tune, I have done the data logging the same as you aswell. I know everyone knocks generic tunes, but my car is making good/reliable power, with just an exhaust, cooler and generic tune 10psi (awaiting $$$ for custom). but yeah do some research, I ended up finding 2 people in my area that wanted to do the same mod, saved $$$ on postage and what not. Hope I could be of some assistance Another question, senna_T have you done much with the data logging program or know of anyone that has? I am just wanting to find out what increments the readings are in?