I've been trying to lower the boost pressure from 10 psi to 6-7 psi by adjusting the length of actuator arm. I've already adjusted it three times. Right now its about an inch longer but I'm still getting same boost pressures across all gears.

Here is the pictures after I lengthened the actuator arm. You can see the color difference on the actuator arm in the first picyure. That's how much I lengthened in day one. Later, I lengthened it even more in the second picture. But still getting the same results. There is plenty space there for the arm and flapper to move. This is very strange. Anyone has a clue why?



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Which evo do you have 1? 2? 5? Need more info.

 

An adjustable length actuator rod is not intended to be used to adjust boost pressure . It is designed to allow you to preload the actuator can spring so that the flat valve/s stay on their seat/s until boost pressure on the cans diaphragm pushes the rod to open the waste gates flat valve/s .

A .

 

What you just explained is that the rod is designed to change the boost pressure lol. U contradicted yourself to the fullest. That's the rods whole purpose is to adjust when the wg opens and at what psi. When u tighten the rod it pulls the spring tighter meaning more pressure will be needed to open the wg therefore more boost. Or as u said keepung the flat valves seated longer.