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intake manifold
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  1. Evo X Dyno
    I've been working on testing and tweaking a certain company's intake manifold for the past six months or so. Back then, we got a prototype manifold that had a great design, but had some issues to work out. Despite the issues, the manifold still showed some decent gains (around 15hp and tq) on...
  2. Evo X Engine (4B11T)
    Anyone have any experience with Grimmspeeds port/polished work on the ex mani, in mani and TB?
  3. Evo X Performance
    Gauging interest - Would you be interested in a SpeedCircuit ported intake manifold? Powder coating is optional (wrinkle black pictured). Expected Pricing is as follows: Ported intake manifold - 239.99 shipped within the lower 48 states. Powder coating - 89.99...
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