Well the issue I had is I was sent an outdated kit with there tune still on the cd. so i had to call them and get them to send me a tune which didnt work with the uprev cable. I then had to get them to update my uprev cable to be able to use their tune. The whole process took about 2 1/2 weeks lol and it was the passenger side MAF harness that we had plugged into the throttle body. swapped them and it started right up. Definitely getting a custom tune though