Side Air Intake Pressure Differential ?


Equipment - 8 feet of poly tubing, some water, lotus elise, duck tape, video camera to capture evidence, closed road for speed test.

The Gauge

Outer Pressure Sensor

Inner Pressure Sensor

Pressure reading at 0mph - levels equal

Pressure reading at 100mph, front tube has higher fluid level

The front tube is connected to the engine bay sensor.

Therefore there is a pressure differential between the sensors, the lower pressure being in the engine bay, so cool air should flow into the engine bay at this speed through the side vent.

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© Elise FAQ Team 2002