Both friends of mine and we did some fun runs tonights. Mods on cars:
WRX - Borla header, sti up-pipe, stromung 3" turbo back with 2 high flow cats, K&N drop in filter and cobb accessport stage 2 flash
EVO - Upgraded FMIC, twin disc clutch, headbolts, 272 cams, Buschur 3" turbo back exhaust with 1 cat and a MBC set at 19psi I think
Sunfire - 2.2 ecotec with forged rods and pistons, hahn stage 2 turbo kit (FMIC and 16g turbo), open downpipe, MBC set at about 12psi....stock clutch, axles, etc
45ish roll on the freeway up to about 100 they got right about 2 car lenghts on me. The Sunfire was having some boost creep because of the open downpipe and was overboosting a little too much for the injectors which was making it misfire and run lean a little but still pulled me pretty good. With some bigger injectors at that same psi I figure he would have gotten 4-5 cars on me, we'll find out soon.