I have a stock gen3, I already did a compression check (180,175,180,180), Timing is at 10* and it idles at 1k rpm.
I did a boostleak test, Installed a mbc ( i plugged the factory boost controller line going back) and it went from 7psi to 10 max no matter how much I turn the knob.
I have a mr2 BPV and before the boost leak test it worked ok besides it staying open and venting until I began to boost. When I did the boost leak it would open and vent but it would open and close automatically when I pressurized my engine. I moved the lines around on the vtv and it stays sealed during the boost leak test but now it won't vent when I boost and let off.
I'm running a st205 ecu with no cel codes ( i made the diy code 54 harness w/ relay)
I don't know what else to check. I just got this car back and the P.O. had a gen3 installed but he never messed with it and it only boosted 7 psi then I got it back and now I'm here.
It has a flebay 3" downpipe and it's the same one that I installed when I previously had the car with a gen2 and a regular ct20b. Now it has a steel wheeled ct20b if that makes any difference. Very little shaft play on the turbo.
Please help, Any advice?