i know which one you have and you need these instructions. im borrowing these from another website.
The "T" piece gets spliced in, arrow towards waste-gate, between vacuum source and waste-gate, the "Controller" comes from the Black-Port on the Top of the "T" to the Top-Port (Adjuster end) of "Controller", and just vents to Atmosphere out the Bottom-Port.
The arrows on the thing are completely wrong. After doing some research on how wastegates work and how the check valve is setup (the "T" part). I believe the knock-off company did not actually do the research when they made the stickers. The knock-off "T" has the spring and ball set up a different way then the "TurboSmart" one. In the "TurboSmart" setup the ball is against the inlet side, the knock-off is on the wastegate side. They both function the same, but use different techniques. You can check by blowing through the "T" fitting on the top and seeing where the air comes out... the free flowing side is the wastegate side. Because it does not matter if there is a vacuum leak on the wastegate side as is does not use vacuum pressure.
The idea is under vacuum the ball is pressed against the opening by the spring stopping any air from going to the wastegate or the venting boost controller. And when you have boost, the ball pushes against the spring and moves the ball out of the way allowing the airflow through to the wastgate and boost controller. "TurboXS" used to do this with little rubber gaskets, that when under vacuum seated and sealed and under boost pushed out of the way venting boost pressure. The check valve design also makes it so depending on spring tension (like a BOV or Wastegate spring) it requires a certain amount of boost (pressure against the ball) in order to even let the boost pressure pass by to the wastgate actuator. Making it so the actuator does not creep open before your peak boost.
The entire point of the check valve is to stop you from having a constant vacuum leak to atmosphere when using the Manual Boost Controller.
Hooked up this way the kit works perfectly.
Wastegates work exactly opposite a BOV... but do the same thing.
Wastgates use boost pressure to compress a diaphragm spring rated to compress under a certain amount of load to actuate a valve.
IE: When you have positive/boost pressure of 7psi-ish on your vacuum line, a 7psi rated Wastegate actuates and opens the "Wastegate-valve" allowing exhaust gases to bypass the turbo thus creating less boost.
Blow Off Valves use vacuum pressure to suction a diaphragm with a spring rated to compress under a certain amount of load to actuate a valve.
IE: When you have negative/vacuum pressure of 7psi-ish on your vacuum line, a 7psi rated BOV (most are more like 17psi rated springs hence the adjuster screw) actuates and opens allowing the excess boost in front of the closed throttle body to be vented without back-flowing into the turbo.