12-01-2017, 02:25 PM
Actually with the Staintune what you are mostly gaining is a louder and to some, more pleasing exhaust note. In 2013 guys were weighing and dynoing their bikes and iirc the weight loss was like you said in the neigborhood of 4 pounds and the dynod performance gain was more in the neightborhood of 4 hp. Certainly not 7 or 8 hp that Staintune claimed, and that gain is in the very upper rpm range of the engine. Still that is some weight savings and some hp gain so it's a positive, particularly if you like the sound.