I switched to a JRE remote tune back in 10/2010. I had a local tuner that is VERY well known and the tranny would not shift and the car was lazy down low. please keep in mind I have about 250 1/4 runs on my wifes car with 40,000 miles. it don't miss a beat. also the car Jre mentioned above is beat on all the time I know because he is local to me. Yes i log every run and also have a wide band. 1 more thing JRE has remote tuned 5 FI cars (500-725rwhp) for me and none have issues.