I could tell the difference already. Made a 120+ mile trip to Pennsylvania today, almost all highway miles and the car drives like a dream. It held the road beautifully, the difference was noticeable immediately.
I am happy to know I wasn't crazy all those months thinking something was not right!
Mods: Drop in K&N filter, Steeda RSB, MS3 RMM, Remote start, Llumar tint, Ti engine cover, Husky floor mats, OEM splash guards