I raced a 2.5RS, they run about a 16.0 flat. If your friend cant launch his 2.5, your gonna beat him. I smoked the one I raceed off the line cuz the guy didnt know how to slip a clutch, he never made up for it, so if your running faster then a 16, you should be able to take it, the one I raced even had intake and exhaust.