I just got my ATS-V a few weeks ago and handed it over to Scott Cook with Tapout Tuning. We found the previous Trifecta tune actually degraded performance from stock (not a knock on them as there could have been a reason). In just a few days the Tapout team had me over 600hp. When it comes to customer service, they went above and beyond. Took my car in within a day of notice, fixed a fuel issue free of charge, showed me how to use the car, how to manage it, and even advice on how to drive it properly. Also, gave my car a fresh inside and out detailing, also free of charge. That first ride was so much fun and I couldn’t imagine trusting anyone else with my V.