This is a very detailed video on how to remove your “SET” valve on your Suzuki GSX-R. Suzuki SET or (Suzuki Exhaust Tuning) is a device fitted to Suzuki motorcycle engines that constinuously adjusts the back pressure within the collector of the exhaust system to enhance pressure wave formation as a function of engine rpm. This ensures good low to mid-range performance. This valve is claimed to give back pressure during low rpm’s and open full when going fast. Other people think it’s for …