Just built some tunes for my LB7, I flashed just a single tune (dynoed 65HP). Heres my issue; it runs great up to 70-72 MPH and then its like its starving for fuel. It will hesitate and then take off again get to like 76 and then do the same thing again. I can't figure out what it could be. I data logged it and it shows "MAP kPa" seems to be the first thing that really drops while staying in the throttle. Could it possibly be a limiter I missed? I went to just a 20HP tune that I screwed with and it did the same thing. The truck has a airdog II 165, K&N intake and 4in exhaust. Thanks for any help.