problems, only a typical one of the front end clunking. A lower ball joint, link pins an lower control arm later, seems to see the problems fixed, just make sure that previous warranty workers tighten all bolts as I drove mine for about 2000ks to find that the upper control arm bolts were not retightened mods only go so far as debung done, CAI, injectors (??) tune and just tossing up about the intercooler as it is the biggest restriction in these things. but I am sure that my tuner will point me in the right direction.