Supercharged111
Truly Awesome
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No, that's not how that works. You can see from the data that the Temperature isn't even remaining constant, you are actually pumping heat into the air the entire way into the cylinder. Also, technically pressure isn't dropping. You are actually increasing the pressure in the manifold from idle to full throttle. At no point is the pressure in the manifold less than the pressure in the ambient atmosphere, so you are technically taking air at a set pressure and volume(atmospheric) and dropping the pressure while raising the temperature. n and R are also constant because you aren't adding fuel or changing the gas composition, so the only thing that can happen to make it balance out is for the volume to increase.
This whole thing has actually got me thinking about a manifold based intercooler like they have been running on the supercharged LS motors. I wonder how rough it would be to modify one to go in between the upper and lower manifold and what the actual effect on drivability would be... maybe a fun experiment for the future, since I have plenty of room in the squarebody for it.
The only reason you're increasing air temperature is because everything around it is hot. I was speaking purely to the single point of P=VT. Hell the reduced velocity may just add the heat right back in too.