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The 2-220 assembly (2-110 core) uses a top-to-bottom style core. The flow area is 9.24" and length of the flow is 6". That is why the 2-221 assembly (2-115 core) has twice the flowrate, since the width of flow doubles, not the overall length from end tank to end tank. Some of the "W" and "H" are off on there, and the flow rates need to be refigured. Most are fairly accurate as is, though. They are all measured at a 1.5 psi pressure drop. BTW, Stillen intercoolers use a 2-195 core. They each flow 500 cfm, so that's 1000 cfm of flow at 1.5 psi pressure drop. I'm not sure if the UAS can make the same claim. Looking at the 2-195 flow chart, they have only a 0.45 psi pressure drop each at 20 lbs boost and are 85% efficient at only 20 mph.
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