I was excited about installing the S1 Cam on my 26 Honda Grom but I have been really disappointed. The bike feels much slower when accelerating and 5th gear is even worse. I even timed my 0-60 before the cam and then after the cam and just as i thought the bike was much slower. Installing the DHM stage 1 tune with my Yoshi pipe and Intake really woke up the bike but i do really regret installing the S1 Cam with the stage 2 tune. I had a master Tech at Honda perform the install and set the valve's so this poor performance is not due to a bad installation.