jrpriest

I wanted as long as could stand it. But, I broke down an had my 2014 Denali with the 6.2L tuning this week. The things I hated most where the poor throttle response and the weak transmission shifts. You would tell the motor had power, but GM was keeping it bottled up. I consider buying EFILive or HP tuner software and thought it best to use a professional. I live near Atlanta and was able to find a Pro in Cumming Georgia, Vengeance PCM. The owner Mike Carnahan is also the in house tuner. The work on just about anything GM. I talked to Mike about the issues I wanted modified. We took out his computer and using HP tuners software went to work. In about an hour he came into to waiting area and said let's go for a drive. I was amazed at the tranformation. The throttle response was lighting fast and the transmission shifted like i was in a race car. We drove around for 30 to 40 minutes while Mike made some adjustment to my driving desires. The fact was the transmission shifted to hard for me. Mike reduced the transmission pressure and added a little delay to the shifts. It work prefect. I am kicking myself for waiting to long. Mike is a good guy. He even sent me a follow up email the day after to let me know that I could come back by any time to make adjustment after I had driven the truck a while. I got to see a lot of interesting things at Mike's shop, a CTS make 1,000HP and his shop truck. A 2014 Silverado with a newly fitted turbo. It was wicked. Vet's where a around even a 2014. I can say enough about my visit, i was every happy. by the way the gas mileage improved a little. (19.2 mpg) Cost for the custom tune was $350 which seem cheap based on the results. Mike's contact info is below: Mike Carnahan Vengeance PCM 241 Castleberry Ind. Drive Cumming GA [email protected] Mike is quick to reply by email.