Power_put

hi to all out there im New to here and i just bought a Subaru 1997 GC8 EJ20K, Japanese WRX, and i have some mods i just done and i wish i could boost a little more i pluged in the Apexi power fc and standard boost seems at 1 bar how much more can i boost on a standard EJ20K motor? and do i need a different map sensor like the optional boost kit for the apexi power fc? or can i boost without the Apexi map sensor? and if i do purchase the Apexi map sensor what changes do i need to do to the Power FC. Thanks for your help and sorry for the booring Questions.

these are my mods

hks down pipe
hks cat back
Apexi Power FC + Commander
hks Fuel pressure regulator
Walbro fuel pump
New oem fuel filter
plitanium NGK
Custom water injection (not working yet)

I installed the water injection ready for high boost

help much appreciated.

Welloilbeefhooked

iTrader: (3)

My MY98 WRX has a few more mods than yours but the engine is standard. I run 1.21 bar and have no problems. Has anyone told you about running optimax and possibly an octane booster? A knocklink would also be a good idea if you intend to up the boost.

Power_put

yep i do run octane booster already but we dont have optimax here. and about the knocklink i have the power fc already displaying the knock levels.

Anyone say something about the Apexi boost kit (Map sensor) please

Power_put

i would be very thankfull if someone pointed out if i need a 3 bar map senser to boost higher that 1 Bar

please anyone

Leslie

You can adjust the boost with a Dawes device, very accurate and reliable. Just watch out for detonation and if you go too high with the boost you may get fuel cut which will give you a fright first time it does it! The fuel to the injectors is automatically stopped if it goes above the regulated boost value. Somewhere around 1.15 Bar if I remember correctly. You then need a fuel cut defender if you want to run more boost than that. If you can't get Optimax then you will need plenty of octane booster in the tank.

Les