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Originally Posted by Jakey
Explain please.
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Prove to me for once that it isn't a marketing gimmic.
Thats right, I want YOU to prove to ME something for once. I've done my research, my opinion stands.
Until that is done, I am saying that 99% of the time, it is a term that is thrown around and used to describe a poorly designed transition for a runner inlet.
Maybe I'll back to back test them on our flow bench (once its done). Heck I'd even donate some dyno time if someone wanted to test them.* Until then it's just a theory. I know of manifolds for different applications that use and don't use velocity stacks. The majority of the time, on a forced induction setup, it is a wash. Where in a NA environment, you usually see the gains with a velocity stack or a "bell" inlet for intake runners.
*But I would want the EXACT same manifold with and without velocity stacks. If its on the dyno, same car, same mods, same day.
I've done all the research on this I can. If I truely want to know, we'll design a intake manifold with both and test it. Until then, I am tired of reading about it and coming up with inconclusive data. (as far as velocity stacks on a forced induction setup is concerned)