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polished intake manifolds?

Discussion in 'Performance and Tuning' started by diver john, Apr 2, 2009.

  1. Apr 2, 2009 at 9:30 AM
    diver john

    diver john [OP] Member

    Oct 6, 2008
    Gloucester MA
    03 DBL cab TRD
    Volant intake, JBA headers,1st, cat MIA, Gigson cat back, Sprayed Bedliner, Eclipse6620, Sunroof, Toyo open countries, Full OME suspension, ARB front bumper, CBI off road rear bumper, yakima racks
    From time to time I hear of someone either upgrading to a polished intake manifold or doing one. Does anyone know what the stock surface of tacoma manifolds is? Is it rough cast or polished? What if any performance gains could be expected? There is a new/ used manifold for sale and like everything it give me bad ideas.

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