My 2003 C5 Corvette Z06 has been for sale for a couple of weeks and it started to bother me that I never resolved an idle issue that popped up after I made some fixes and upgrades to the car last year.

So I decided to spend $590 on a new dyno tune at Vengeance Racing so I can send the car on to a new owner with total peace of mind. I was also curious to find out what the dyno sheet would say and whether I could learn anything about the "mystery cam" that was in the car when I got it.

Special thanks to Mike at Vengeance Racing for letting me film and explaining his process when tuning the car.