The only mods i have left on it are the greddy turbo timer and the eibach springs and a catch can. No kicker system but has aftermarket speakers in the front doors. Mileage is 62 thousand and change...i still have to drive it periodically so it changes some. No warranty work ever done while I have owned it. I am a mechanic and do all maintanence myself and have had no problems with car at all.