hey guys , ive got a 1993 jap import wrx , has an apexi type r boost controler (was on it when i got the car) , full exhaust de-cat , induction kit bailey dump valve etc , car runs fine on normal driving but when im racing someone or i reali giving it the beans it flys but seems like on high boost and high rev range its reali jolts and cuts the complete power then jumps back into life , its currently runing about 1.2 bar , jst dont reali know witch way to go , any ideas guys?????

 

i would guess you are hitting fuel cut as 1.2bar is way above normal boost/fuel cut on a 93wrx.
Can you lower the boost the 1bar?

 

hi mate i have the same prob with my 96 import ive upgraded tp a td05 turbo as well im running mine at 1.0bar and it runns sweet to help me with this ive fitted a manual boost controla hpoe this helps mate

 

so maybe lower it to 1.0bar , isint that abit low tho??

 

standard 93wrx boost is 0.87 bar fuel cut is about 1.05bar unless you buy a fuel cut defender then no matter what the boost controller is set to you will hit the standard fuel cut.
If you want more boost a remap is really the only way to go imo

 

well yer lowerd the boost now , but still got the same prob , it has boost adjustment and 'duty' not quiet sure what the duty means , its currently on 60% , also the boost is comin in a 4,500 rpm for that is quiet normal?

 

Drop it to 0.8-0.9 bar, should be fine at that. Hitting fuel/boost cut is doing your engine no good at all