Relocated Mass air sensor lower too the ground

true, the air is more dense closer to the ground compared to 1000 ft in the air. but honestly, how much more dense is it? maybe the longer tube to the throttle created more velocity or something, but the air being more dense is kinda sketchy

I can see if the air pickup was lower to the groung but what difference does it make where the MAF sensor is located? I'm with ECU5.0 on being a bit skeptical about the gain. Pulling air into the throttle body from perhaps a 12 inch difference in altitude wouldn't produce a noticable gain. About the only thing I've seen that really has produced measurable dyno results is drawing cold air vs. hot air from the engine bay. Even the ram air kits that I've seen (read) about being tested produces negligible results where a positive displacement supercharger or turbo was not being used. The centrifigals seemed to care not if ram air was used or wasn't.

the actual location of the MAF meter in the intake tubing makes no difference whatsoever except for one thing. The air is supposed to pass through the meter as straight and steady as possible, to get the most accurate measurement of the incoming air. If the open end of the intake draws in air from a spot that is "colder" or "denser", then the air farther up the intake tube will be the same. It might heat up a little, but it wouldn't be much. Moving the MAF meter down the intake tube to get it away from the heat of the engine will only richen up your a/f mixture. If that makes more power, it's because your tune was off and you were lean. If your car was in tune and then you moved your MAF meter, if anything you'd go a little rich and lose power.