Hi guys,posted this problem before with no reply's so thought i'd try again.

The problem is that my car MY94 wrx sti version 1 (import) is only producing 0.5 bar (7 psi) of boost. It originally came with a blitz 2-stage boost controller although the electronic controller is missing,the under bonnet unit (black box with 2 pipes feeding into it!) is still there. So i decided to remove this box and re-connect the boost pipes back to the wastegate controller.

Now am i right in saying that the boost pipe (coming from the turbo) connects to the bottom of the controller and the pipe from the actuator connects to middle of the controller,top pipe vents into the air flow pipe.

Ive reset the ecu (2black + 2green) and the ecu reports no faults but iam still only producing 7psi of boost.

Hope all that makes sense!!!

 

So have you connected the pipes to a boost solonoed that isn't being controlled by anything. Is the solonoed you are conecting to, the oem three port jobbie?

 

Yeah everything is back to oem spec and it is the three port unit!

 

Think your pipes are wrong. Found this;

3 port
Top - compressor/turbo
Middle - actuator
Bottom - Air Inlet from manifold

I'm just quoting from another thread. So get sombody to confirm. Hope it helps

 

confirmed...

Wrong way round fella

Dave has it right.

Andy

 

Will swap them around and i'll let you know later - fingers crossed!!!

Thanks for help too

 

Cheers guys, that has made a huge difference to the performance of me car.

running at 1.2 bar with the odd flame out in second gear

Many Thanks guys!!!!