Have inspected wastegate and is clean as a wistle! Closes all the way (visually) Spring is tight enough to take the tip of your finger off! This waste gate is sealed tight when it is closed!

Looked inside with high-tech lighted michroscope and completes a sealed close.

Pod was actuated with 3 lbs. from my shop air comp. and opens and closes as it seamingly should!

So why can I not achieve more than 6 psi from 2500 to 4000 rpm????????????????????????????