Tuning is vital when it comes to any car, unless you don't want it to run well.Well I am hoping to run the msp again this weekend so I will let you know how it goes. And how much of a difference did the ssafc make with it not being actually tuned? Just wondering because I am planning on getting one, but don't care to put a rediculous amount of money in the car as far as tuning and whatnot.