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They cost about the same, what do you think?
1999 head vs. stock head port and polished?
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Engine & TransmissionHi guys. Really enjoying the JRCAI on my NA6. Makes so much difference between 3 and 5 thousand rpm. Shame I can’t upgrade the throttle body or inlet manifold. Sent from my iPhone using Tapatalk- 1
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Feffman · updated
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concealer404 · updated
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