The RRC manifold needed to have an IACV port created so the IACV could work.
Luckily the modification was already performed by the owner who lent it to me. All manifolds excluding the "PRC" needed the waternecks lopped off because most of the K20A engines have a waterneck that is separate from the intake manifold.
With that taken care of, I was ready to start the shootout at ERE. The dyno testing took place on three separate days or sessions. In Session 1 we dynoed the PRC and Endyne ported RBB. Session 2 was the stock RBC and Skunk2 manifolds. Session 3 we tested the remaining BPR RBC, RAA and RRC manifolds.
ERE uses a Dynapack dynamometer that is calibrated for wheel horsepower. As a disclaimer, I would like to mention that all dyno tuners have their own preferences, calibration settings and so on with their own dyno configurations. The results I make may differ from your results.
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