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Thanks for the reply! So I ended up getting a boost gauge from my work that goes from -30 inhg to 30 psi and it showed that I was getting good vacuum (about -19 at idle) and whenever I would hit it with a decent amount of throttle I could only get up to about -4 inhg, which is where the stock...

So I put my wastegate back to stock, and I had to adjust my cps to be able to start the car. I took it out and I couldn't get higher than -4 inhg on the boost gauge. Any thoughts?

Any resolution to your problem? I just rebuilt my engine and my stock boost gauge isn't working. My turbo is spooling but I wonder if it has anything to do with me shimming my wastegate. Don't have any engine codes either.

The answer is 22 x 1.5 for anyone that wanted to know.

Does anyone know which tap to use on the union bolt? Mine needs to be cleaned a bit after I wrestled with what was left after the union bolt broke.

1989 supra turbo here in greenwood. Just finishing a BHG rebuild. Would like to meet some Indy supra people. Any events coming up this fall?