St205 Boost Issues Options

[94gt4wrc]

I bought a 94 Gt four wrc. It's has an aftermarket boost gauge and now that's I've owned the car for a while I'm learning and noticing something. I've read that in 1st and 2nd boost is around 8psi and afterwards it's upwards of 13. My car remains at 8.5psi throughout the gears. I checked the codes, only have one error code for wheel speed sensor. And I cleared it and still the same. Could something be wrong with the tvsv? What do you guys think, I'm new to turbo'd cars so any help will be appreciated.

[antoine64]

The vsv may have an in and out port. it may only allow air to flow one way. that was what it seemed like when I recently set mine up. the vsv should have 20-28 ohm resistance and should turn on and off when you apply 12v to it. also the air in port is the one on the inside of the vsv. I tried turning it on and blowing through it to test. Make sure the vsv has a good place to dump the air. mine is hooked up to the same air hose and the idle control valve but for testing you could leave it open. it will only blow air not suck it if I am right about the one way thing.

My car has an error 42 and the boost is not affected by it (I think) I was able to boost up to 14psi on my way to work today.

also you might look for boost leaks in your piping if you haven't already done that.