i own a 2005 si, the miles on the car are only 2400, so in other words is completly stock, till two days ago. I raced before two tc's with my car being completly stock and took em both by at least 1 car, and one of the times was from a complete stop with four people in ther car and three on the tc, the third time was coming from south beach in the high way but i had already installed my short ram intake, and again took him doing 110 mph at least both of us, now this are facts from me to you, you decide...