Well, i just got this 91 toyota Supra from my father, it has a turbo, and i wanted to know what i can do to it to make it faster. Money is not a fastor, i chose this car because i liked how it looked, and i wasnt to fond of the newer Supras. I dont want te car to be extremely fast i just wanna be able to beat my friends GTO, if i can (My car looks better though).

Start w/ a good exhaust system, K&N FIPK intake, a hi-flow cat. convertor, downpipe, and maybe even a turbo upgrade and/or intercooler.

You can make a bleeder valve for about $14. You get a 1/4in T, cut the wastgate actuater tube, insert the T at the cut, run a 1/4in line (to somewhere you can reach it) and put a bleeder valve on it. (a compressor surge valve works) Its just gunna trick the turbo into thinking its running stock boost while its actualy putting out about 4psi more.
Simple. Cheap. Fast.