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  1. Naturally Aspirated
    Humble Performance's latest sohc NA project(dyno sheet inside) UPDATED D16a6 sleeved bore to 78mm. stock jdm D15b head cometic 80 thousands thick headgasket stock jdm d15b cam stock z6 intake manifold stock ignition bisimoto header no exhaust s300 compression no one knows as there are no...
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