I completed this project for Hondata Inc, an aftermarket performance product automotive company based in California, that specializes in Hondas. They asked me to find a way to consistently and affordably block a set amount of air from entering a mass airflow sensor, to allow it to be recalibrated to measure a greater airflow range than stock. After some experimentation, I settled on an insert with an oval hole with a fillet, which produced the least turbulent airflow and the most consistent results. Since the final product needed to be precise (10mm long) but low volume (~500 pieces), I settled on having them SLS (selective laser sintering) printed in nylon, for a final cost of about $5 a piece.
