(2018 B9 Audi S5 Coupe)These guys are awesome, very very knowledgeable. I had numerous questions and they had a direct and definite answer for every single one. Used there in house custom tune, a cold air intake and larger intercooler. (Which they ordered for me)They told me to drop it off today and I’d get it back Wednesday. He contacted me and told me my car was done the same day I dropped it off. Absolutely unbelievable turnaround time. As far as their tune goes, much more responsive, excellent power increase at low and high rpms. You really feel it. I will be going back shortly to get a exhaust installed already ordered it. (again through their part dealer). And will be returning after that to remove all the cheap oem plastic parts in my engine bay.