The most important setup in the tc4 is roll center.... You will need to run no shims under the front arm mount that's next to the bumper, and no shims under the rear arm mount that's on the shock side of the rear end... You can also raise the inner camber for more fine tuning... I did all sorts of setups before that with no success: I was traction rolling everywhere, and the car was a slow brick ! Now, I can run over dots while cornering without any issue at all... The rtr arm mounts are way too high, and you will need to get the factory team ones to compete.... Also the front LCD drives (losa3344), are a must......