im not shure about cutting your time in half but i would assume to see some good improvment with an air intake. on these cars the throttle body is to small to begin with ad wont let enough air in. so with that said doing anything to help that problem, air intake, and would allow more air to flow into the engine will help it. also if you want to keep upgrading go with a 2" exhaust all the way back. these engines dont need much if any back pressure to operate well. damn i love theses things