just thought i'd update. i was cruising around town tonight and i ran up on a friend that just bought an 06 scion tc the only mod is a k&n air filter. we did two runs. he won the first one (he's a manual and i'm auto. i did a cold start) the second time i torque braked and won by about a car lenght. he missed second though. we're going to have a rematch soon....those darn scions.... so the updated total is:
04 Scion Tc -- cat back exhaust, CAI -- lost
93 Honda Accord -- cat back, headers, short ram -- Won
98 Ford Ranger -- Won

06 Ford Mustang GT -- LOST!!! lol
06 Scion Tc -- air filter -- Draw