I just bought a 2003 impreza wry sit sedan. I love the car, it has a lot of g-ready modifications. upgraded internals and oversized turbo. I have been blowing the **** out of pontiac gto's and bmw's all day. Any way this problem just started to happen. when i go to start off in 1st gear, my passenger side tire seems to vibrate when I go to give it gas for a quick start and vibrates even when i start off easy. . like its slipping or something.. Any hint of what is wrong with my car?