HKS Actuator, how high of a psi?

[purekoryo]

My current HKS wastegate actuator is adjusted to run 15 psi; however, I would like to bump it up to about 19 psi on my gt2871r. Would this cause boost creeps if I put that much tension on the HKS actuator? Has anyone run about 19 psi or more with just the actuator and NO boost controller??

thanks

[Forge_55b]

most likely, yes. but how bad I guess depends on the turbo elbow and how the exhaust is flowed out for consistency, the tune, blah blah blah, get a boost controller to save headaches

[purekoryo]

bump? anyone has tried up to 19 psi?

[JeremyR]

HKS 1430-RN005 Wastegate Actuator Kit S14 S15 SR20DET (http://www.frsport.com/HKS-1430-RN005-Wastegate-Actuator-Kit-S14-S15-SR20DET_p_850.html)

Product Description

HKS Wastegate Actuator Kit replaces the stock actuator for better boost response. Old actuators diaphragm usually wears out, causing inconsistent boost and spikes. Replacing it with a new actuator will help alleviate these issues. Also, the HKS Actuator kit has a unique feature where users can adjust the length of the actuator rod to provide better boost control up to 1 bar of boost manually. It is always a good idea to upgrade the stock actuator if you want to boost beyond 14psi. Boost range higher than 1.2bar can be achieved with the aide of an aftermarket boost controller to direct signals to the wastegate actuator for higher boost pattern. Adjustment of the rod for manual boost control should be done carefully with a couple of turns at a time.

[Psycho 240 Freak]

No you cannot run any higher than about 14-15 psi on the HKS actuator. I've tried it and the wastegate won't be able to open up completely. You'll get real bad boost creeps. Boost will keep climbing all the way to redline.