new problem
 

so every now and then after i get past 4000 rpm and press the clutch to the floor it dips below 500 rpm and dies most of the time. i have no idea what to even start with. what do you guys think it could be?

First off, is the check engine light on? Do you have any codes? Then we'll take it from there.

Boost leak.

Are you running a stock BOV or one that dumps to atmosphere?

no. the check engine light is off and i have no codes. and i dont have anything. no bov or anything. just whatever comes stock on the gte.

If your normal idle is OK then its probably your Dashpot incorrectly set or running too rich.

my normal warmed-up idle is about 6-700 rpm. and what exactly is a dashpot?

Check it here and go to page EC-8
http://www.turboninjas.com/mk3supra/...ndiv/06_EC.pdf
When you decelerate, its supposed to partially open the throttle more than at idle to get a complete burn. If for example it isn't working at all you could a too rich situation that might bog it down. Just set it to factory specs and see how it goes.

ok thanks. i will tell you how it goes when i get it done.

check all your vacuum lines also... my guess is it's a leak