Turbo/Factory boost

[GC82GO]

Hi all, i have just brought a 1996 V3 WRX as a project car. It wasnt going when i brought it but have since replaced or got the parts needed to get it going again. I put a V3 STi manifold, V5-6 STi intercooler/bov, 440cc Injectors, Orange Airflow meter, V3 STi ECU, TD05H 16g and HKS Silent High power Catback exhaust. Now my problem is, is that it is only boosting 0.5 (7psi) bar of boost, but arnt STi's ment to run 14psi?. Im sure i have the boost lines all connected it up right. If someone could shed some light.. Would be much appreciated.

[BC5RA]

Should run about 16psi.

7psi..are you running any form of boost control?

[Guest keltik]

7psi is wastegate pressure on a td05 i do believe?

Sounds like youve either forgotten to hook the map sensor/boost solenoid up or have a vacuum line on the wrong way

[Guest]

+1 for above.

Another possible problem is the TD05H 16g - it may need more wastegate duty than the factory ecu is giving. Im not sure on that.

You could try running a line from the manifold + mbc to the wastegate. Bound to get more boost that way but be careful 16g is bigger than the factory vf23.

[G-unit]

just out of interest when i took my tap of i also got 7psi on the rs,is that stock for them? has group A downpipe full exhaust and intake done

[crazy-jono]

i get 16 pound on my v3 sti with the vf23 turbo.

was running 20 pound till turbo blew up

[GC82GO]

 BC5RA said:

Should run about 16psi.

7psi..are you running any form of boost control?

Yes, i hooked it up to the factory boost controller, when i got the car it wasn't all setup, But it was there, so i copied the way my friends V3 STi Type RA's factory boost controller was setup. I even checked the numbers on the solenoids and they were the same. Ive also changed the line that had the restricter pill in it to one without... Maybe i might have to use a MBC.. though id prefer not to at this stage.