Boost creep (hks ev6)
 

Hello everyone,

I am currently having an issue with my HKS evc6 boost controller (one with the four buttons). I have it set at a conservative 21 psi. When shifting gears the boost will quickly hit 21 psi but creep down to 17 soon after hitting 21. As many know this boost controller has a plethora of settings. I have tried to adjust the offset but as I thought it changes the psi but does nothing to help hold boost steady. My question is does anyone have experience with this boost controller and can help with the settings? I know that my turbos are not past there efficiency as they are the AAM 7163 AFR turbo's.

Boost leak? Pressurize system and look for leaks with soapy water in a spray bottle.

Could it be your wastegate springs are set too soft? Even if the boost controller is trying to hold it closed the exhaust pressure could be pushing the doors open.

I'll check both. Thanks!


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