AEM dual cold air intake (long tube)

tbonesteak

Exactly. They showed that it works. I'm sure it does work. But they chose not to post the dyno numbers with the bypass valve in tact in comparison to without. The bypass valves do not stay completely shut at all times. I've witnessed during dyno days where the valve partially opens due to the suction that's created during WOT. Pulls in hot air and ruins the dyno numbers. Makes sense and that's what I've first handedly witnessed.