i don't have much experience with tuned cars so first stupid question is could that be why? I did read about aftermarket radios causing issues, i have a chinese vw radio in mine but i figured since i can access everything with the engine off then that wouldn't be my issue. I bought the car a couple years ago the PO said it has a stage 2 tune from APR i did verify with them that they had my VIN on file. i also tried an obdeleven and it didnt work either so i know it's not the hexnet. i borrowed an older v2 and tried that with the same result. i can access everything with the key on engine off but when i start the motor i can't communicate with the engine controller anymore. Bought a hexnet awhile back mainly just for clearing codes but i need to log some data and am having problems.