I have upgraded to Dynatech headers, vmp gen 2 tvs blower case and CJ monoblade this year with the incuded tuning upgrades. BJ went above and beyond tuning my car to perfection. I start work early and don't usually get home til 7pm. BJ reviewed datalogs and sent tunes sometimes after 10 30 at night. I am super impressed with the service, work ethic and results. The car feels wicked and pull harder than it ever has.