Quote:
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Originally Posted by TrinaBabe
Here are the stats from a conventional style:
Oulet Total Pressure = 17.3307
Inlet Total Pressure = 18.0696
Inlet Dynamic Pressure = .629711
Hydraulic Loss = 1.27341
Percent Loss = 7.047%
The manifold I used for this test was technically for a DSM which has a larger throttle body and runners than the Evo one I tested with. If I actually switched the DSM version to use the ports and throttlebody from an Evo it has a worse pressure drop than mine. It is quite apparent that the only reason the DSM manifold has less of a pressure drop is because the throttlebody is bigger. The inlet pressure is only ~18psi on this one vs ~22 on the Evo version. Raising the pressure by 4 psi when only working in the 20psi range obviously will have a drastic effect on the pressure drop. I must say I am pretty pleased with the 11% that I have achieved. I promise you it it much less than a conventional intake manifold for an Evo. Also, if I change the throttlebody size for the Evo manifold the pressure drop will become less (Hence the reason throttle body swaps actually help).
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I was testing the flow loss incorrectly
This is the same (incorrect) test done on a "conventional" DSM intake manifold. I will post the correct numbers shortly.