I'm not really into Benz's and dubbing....Im into the japanese cars like the Nissan R34 Skyline GT-R V-spec 2, Nissan S15 Silvia, Mazda (FD3S) Rx-7....but the ride is good,but if you were gonna slap on performance parts....you probably should have skipped the K&N Cold ai and got an AEM...they put more hp to the wheels.....and the chip...ya probably could skip the preset one and get an Apexi V-SFC air/fuel timing system and Valve timing....or if ya got the money for the benz...get $900 and buy an Oak system....you can control every aspect of your carn and plug almost anythin in to the laptop.....But I suggest at least getting an exhaust system to get rid of the back pressure...I would suggest HKS or Greddy....HKS has some killer Benz project cars....If you were to get into track racing or racing anytime...you would need to upgrade to a set of good coil-overs...bu ya got a pimp ride coming so far......the next upgrade I suggest would be the exhaust....then probably some bigger fuel injectors and a digital ingnition....pz