wastegate actuator gone bad?
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This is a discussion on wastegate actuator gone bad? within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; I've been having over boost issues on my 07 wrx. stage 1 cat back exhaust. ive been reading 17.xx psi ...

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    wastegate actuator gone bad?

    I've been having over boost issues on my 07 wrx. stage 1 cat back exhaust. ive been reading 17.xx psi and started looking for leaks in the hoses and couldn't find any. I tested the solenoid and it works. I took out the wastegate actuator and tied fifteen pounds to it and lifted it up and it barely open. also the wastegate itself seems free and not stuck. is it safe to say i need a new actuator? input would be greatly appreciated.

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    Pro Manscaper Mikie13's Avatar
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    What are you reading the boost pressure with? Gauge? Logging?

    What are you tuned with? Any other mods besides CBE?
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    reading it with AP with their ots stage 1 map. no other mods

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    anyone els??

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    Moderator Donkey's Avatar
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    Quote Originally Posted by njandy View Post
    I took out the wastegate actuator and tied fifteen pounds to it and lifted it up and it barely open.
    That is not the correct way to test. You test it by applying 7-10 psi to the actuator reference port. The actuator uses positive manifold pressure to help open it. If you are seeing to much boost then use the LWG map.




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    I looked already and Cobb dosnt have one for my car. I'll have to hook it up to my air compressor with a regulator than.

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    Moderator Donkey's Avatar
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    Quote Originally Posted by njandy View Post
    I looked already and Cobb dosnt have one for my car.
    Then email Cobb. You paid all that money for technical support,might as well use it.
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    i went around the loop with them already sent logs and all that they say it's not a map issue. my customer support experience with them is not very good

  10. #9
    and the Funky Bunch Calvinball's Avatar
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    In what driving circumstances are you seeing 17+? Also, what's Cobb's target boost for your car?

    Edit: Google is my friend, it's 14.7
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    I hit 17 pounds when I realy throttle it. they say 13.5

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    hooked up compressor with regulator. set it at 13 psi and it barely moved. also sprayed soapy water on it and got plenty of bubbles. found my air leak so I need to hunt down a new actuator.

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