9a throttle body upgrade

Discussion in '16-valve' started by Leigh ivison, May 31, 2021.

  1. Leigh ivison New Member

    Joined:
    Sep 24, 2019
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    2
    Hello I’m sure the 9a engine has the 42mm throttle body is it worth fitting the 50mm throttle body if so do i need the manifold also?
     

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