Hi everyone, my name's Tomi. I live in the Stirling area. My Impreza is quite a complicating one. In the past it has gone through a conversion of some sort. I didn't notice this when I bought it a year ago as I was only an L plater at the time. So, the VIN says its a 1993 LX but the engine is a pre-1996 WRX engine (no idea on the actual year so I'm just going to call it a 1994). There are some minor issues that I would like to fix up. One is the boost control setup. It has a MBC but still uses the factory solenoid (it shouldn't right?). The MBC's "bolt" has fallen out, so for now, i just have tape covering the hole. The highest boost I get to is about 5 psi (I did a search on this forum and found the factory boost level is 11 psi). I would really like to fix and clean up this setup I have here. I have attached an illustration of the current setup. Any help would be appreciated, thanks.

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drop it to S Technic or Galvsport

bring cash

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R32 GTR - 800ish

60.7 Long Track at Barbs
57.6 at RAC Reverse circuit.

Is it a 2 door car by any chance?

If you take it there also bring cake.....them boys love cake

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broken wannabe racecar
Wagon daily that has replaced said broken wannabe racecar

what is it with workshops accepting baked goods as payment these days

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R32 GTR - 800ish

60.7 Long Track at Barbs
57.6 at RAC Reverse circuit.

Is this also a wise decision with Galvsport? Will it reduce the size iof the pineapple i get up my ass when i pick up the car?

Cake is not a payment, it is a way of letting someone know that you really appreciate their help!

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broken wannabe racecar
Wagon daily that has replaced said broken wannabe racecar

just tell josh "i heard if i give you a few cupcakes you will knock a few grand off the bill

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R32 GTR - 800ish

60.7 Long Track at Barbs
57.6 at RAC Reverse circuit.

It's set up correctly, it basically works as an adjustable olive/restrictor so you can change what the B/C sees, with the bolt missing it ot has no restriction which means it's probably running W/G pressure, just connect a new line from the 'T' piece to compressor with the right size restrictor pill.
Also I wouldn't be running the boost gauge from there, should be coming from the manifold.

I moved the boost gauge line into a vacuum pipe that is coming straight out the intake manifold, and now the needle actually goes below zero. It never did that before!

I also removed the "plug" that was in the end of the pipe coming out the bottom of the solenoid. There is a restrictor pill inside the pipe as well. I am assuming it is the 2mm one. I have no idea why the pipe was blocked off.

However after all of this, the max boost it gets to is still 5psi...

I might start another thread on this issue in a more appropriate section of this forum if that's okay. Or could a moderator move this one? Thanks.