I have been smelling exhaust when accelerating and decelerating right from when I had about 200 mi. on it and nothing was found at the first svc. 600 mi. I now installed a Hindle pipe on it and have 2700 mi. and am getting occasionall popping when decelling, and still have the exhaust smell. Are 2010 s prone to the exhaust gasket problem also and could that have been missed at the first svc? Is the O2 mod. Offered for the 10 RSS?