Absolutely specialist! Before knew these guys, I’ve tried other two brands’ tuning service, totally mess！Transmission problem, HPFP problem, boost problem and so on, even wonder if ATS-V was a mistake for me. Occasionally, I saw that “Tapout Tuning breaks the world record of 1/4 mile in 9.35” for the last year (8.77 for now), that was so amazing for me. So I tried to contact them for help. Scott was willing to check my logs in former tune for free, and gave several suggestions for me. So under consideration, I decided to choose their HPFP internals, Tapout fuel cam and remote tuning service for my ATS-V. Scott is really patience all the way, fix all the former problems step by step. Now my V is stronger and smoother than ever!!! I am glad to suggest that every V’s owner could choose these guys! Shown me who is the real “specialist”!!!