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Thread: Fault Code PO123 - Came about after Exhaust change from stock to 3"

  1. #11
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    Thanks all, will check everything, replace vacuum hoses, and adjust the psi, post back results

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  3. #12
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    Quick update,

    I have fixed some issues I had with the boost controller, re adjusted the boost psi and replaced the vacuum and boost lines.

    The fault code and throttle response issue are still happening but only randomly now ??

    Have found a replacement throttle body for $700 which is heaps better than Nissan price but still aren't ready to buy it,

    Thinking I might pull this one out and try and clean it all up , maybe its a bit gummed up with carbon and stuff ??

    Any ideas ??

    Thanks

  4. #13
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    many people run catch cans to remove most of the blowby going into the inlet manifold . if the throttle body is gunked , after you clean it up , you might want to consider this as it will help keep your maf sensor and intercooler cleaner as well as the throttle body

  5. #14
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    Good idea , I was thinking of a bigger intercooler aswell so might do both at the same time, start off fresh and clean...

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