purchased a bullydog tuner last week. have a little problem with the connection at the OBD2 port. i have a tight fit at the port but when i hit a pot hole or any bump the tuner turns off by itself. i also have to hold the bullydog OBD connector in a sweet spot for it to work properly. does anyone else have a problem with this? called up bully dog and they told me the connector on my truck was bad. also im not sure i installed it right because i dont notice any difference in performance or gas mileage (14 MPG at best). i am able to keep it on long enough and installed the regular tune and removed the WOT. just curious what others are running for a tune. i have the 126.96.36.199 tune downloaded now. any tips will be helpful.