Flawed for 50 years. How we fixed the flowbench. | Banks Entry Level - In this episode of Entry Level, Banks’ Special Projects Lead Erik Reider explains the function of a flowbench and its uses. This leads to the problem of evaluating air by volume instead of mass, and the inaccuracy of ratiometric measurements. Finally, he shows how to hot-rod a flowbench to get accurate and relevant readings that correlate with readings from parts tested on an engine. All sensor data on our modified flowbench