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"that some cool stuff right there"
x2. The first and second runner, esp. the first, after the TB will probably be starved though, esp. at higher RPM. At the higher velocity the air tends shoot by the first runners and pack at the rear of the plenum so the first cylinders run rich. Hopefully he's watching EGT on the back cylinders, esp. on a plane. Nice work though. The 3.2 intake tends to mitigate this problem by having 90 deg entrance into each bank plenum from the TB but then there is still some higher flow on cyls. 2 and 5.
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