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Originally Posted by BigVinnie
Basic fluid dynamic principles involved, but only small gains...
Not worth $60 for a spacer. All it does is increase plenum volume.
Better off with a 62mm bored TB from max bore and porting the plenum yourself more gains across the board than a spacer can offer.
When will some one stop making cheap fabricated parts for the KA and just redesign a whole new manifold with short runners since that is what it needs for more HP and high end rev?
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Good answer, but I've seen test prove that there really is no gain in Larger TB. But for 60 bucks, and that large or an Increase down low, I think its Worth it. And Its not just something N/A guys can use.
As for your manifold Idea, for the cost of devlopment and Production, I doubt many people would buy it.