Great tune(inmotion), lightweight wheels/tires which shaved a lot of weight and a couple custom goodies that help out. I can also tell you what didn't help me as well.......NO nitrous or meth. Friday nights are "Midnight Mayhem" open track night for street/registered cars and I have ran it for years with no helmet(I only wear it on NHRA sanctioned events) and they decided that I needed to be the only one that should wear a helmet. That pass was against my buddy in his Maggie SRT-8 and his son filmed it.......and my 11.7 from last time and I still haven't been able to get him to email me either run.