Science says otherwise.
Bring receipts. The primary function of the air box is to hold the filter. The secondary function is to dampen the intake noise that is created.
Nothing about the engineering of standard air boxes on non performance vehicles was done for performance.
Now if you can use White person speak and articulate that the engine bay heat can be an issue in open filters, I’d have given you some credit, but that is why most systems isolate it with the back of the grill/air entry point then develop a partition for the open filter. Then there is zero restriction based on a shit plastic box.
This logic was proven on all the shit box forigens and many American sedans back in the 90’s.
Also if you go look at the engineering documents from Gale Banks on their system you find similar outcomes.
Manufactures don’t engineer for performance outside of a few platforms. It’s for sound reduction.
Also a side note even hot or warm air is better than reduced air. If you move more air then it has to suck more from somewhere that isn’t warm (as engine bay)
The Science (dieselarmy.com)
Also, you kind of made my point:
>Nothing about the engineering of standard air boxes on non performance vehicles was done for performance.
Hence the modification to bring in more cool outside air.
Perhaps you misunderstood.
Lab studies on turbo-diesel engines confirm that lowering intake air temperature (via better sourcing or cooling) increases air density, improves volumetric efficiency, and can reduce fuel consumption by around 1% (when cooling power is accounted for), with benefits to emissions and efficiency. That, according to Sciencedirect.com
My point is the box is only part of the issue. Most of the restrictions is the box and bends in the pipe.
Dieselarmy is not an engineering company. Gale Banks is he has over 40 years engineering performance.
Diesel army, lulz