| although they were on different cars. UAS owner John Pennlington got 3-4 psi drop on his setup tuned to around 350 RWHP. Mike Smith measured 1 psi drop on a Z boosting 1 bar (not sure of the RWHP number, but I would guess between 325 and 350). I have no idea of other mods on either car. Either way, its not hard to look up theoretical numbers on flow tables to get an idea of the flow differences.
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