With the typical adjustable clutch, you are chasing track conditions when making race day adjustments. Basically, it's all about getting the right balance of clutch slip and tire spin to keep rpm up where you are making power. Then if the car is also driven on the street, you will need to manually crank up the base to keep that clutch from slipping too much when using the throttle at low rpms. Switching from race mode to street mode can be kind of a hassle, usually requires going under the car, a jack, tools, etc.

With the ClutchTamer, you are dead hooking and adjusting the intensity of clutch's engagement to keep engine rpm up where you are making power. Engine power usually doesn't change much from run to run, so 'Tamer adjustment usually doesn't change much either. Also no need to change settings between street/strip modes, and when you do need to change settings you can do it from the driver's seat.

Grant