Background: I came across this video from a vendor named Tegiwa, published early in 2026. Since it was published, I’ve seen it referenced as proof that an open intake is inferior to a closed intake. Beyond the fact that the conclusion others draw from it isn’t adequately supported, this “ultimate intake test” reminded me of

Background: The MQB community relies heavily on tuners for guidance and technical interpretation. How many times have you seen an answer given such as “Ask your tuner“, or “What did your tuner say?“, or “Tuner XYZ said so“? That’s why professionalism and technical rigor matter. This post examines a short exchange I had with a