i went wit my friend to a dealership cuz he wanted to test drive an 01 stang and he needed sumone over 21. so after i did some donuts in the stang, i noticed the guy had a 00 si on the lot, and asked him if i could test drive it. i look inside, see a gauge cluster wit air/fuel and nitrous gauges... hmmm... i was hopin he still had some in the bottle i thought. so i popped the trunk and to much dissapointment, no bottle. weak! mustve disconnected it b4 he sold it. so i pop the hood, iceman intake, dc header, msd sci, race clutch, lowered, and some other minor shit. start it up (took a couple seconds) and got out on the road. after gettin far enuff from the dealership, (the salesmen let us take it out by ourselves) i get on it pretty hard and it was pretty loud for stock exhaust. however when the vtec kicked in, i could hear it, but the car didnt seem to pull any harder like it should. the check engine light was flashing when i started it up and it kept flashing as i drove. course i would never buy a car that i knew had used the juice, but what the fuck did this guy do to the car? it just sounded messed up i dunno. didnt even seem as fast as it shouldve. any ideas?