i figured out my problem of not revving past 3k... kinda
i checked the IDL signal and it was getting 12 volts. so i was like what the hell, so i cut the wire. then i was like, ok i'm sorry, i'll fix you.
so i soldered the wire back together, and started the engine up. and now it revved way past 3k, problem is gone.
oh, and where do you suggest putting the O2 on the downpipe. it says between 10 and 2 o'clock. how many inches away from the turbo would be good. i figure about 6 or 5
i did have a nice video of my car revving, but somehow the loud exhaust made my camera take a crap and messed up the file. so all i have is the walkaround... i'll try to get a better video of it revving