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I'm having trouble setting the boost level on my setup. I'm using an HKS actuator which has a specified opening pressure of 0.8-0.9 kgf/cm2 (11.4-12.8 psi) However, everything I try still has the turbo creeping past 15 psi.
With no preload, it will hit 10 psi at 4000 rpm then steadily creep past 15psi until redline. With more preload it would build more boost initially but still creep. With this increased amount of preload, the boost pressure would spike hard when coming back on throttle, causing my Haltech to hit its overboost protection. What is going on?
Also, I unknowingly had the wastegate pressure signal completely blocked by my boost control solenoid. Why did the boost not shoot up over 20 psi?
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