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Figuring out pressure
What is the best way to go about measuring absolute pressure at remote locations? I want to be able to test air pressure in and around my car to keep down-force close to neutral as I mod.
Before modding, the hood on my Mustang would dance around from too much air underneath it. I happened to remove the HVAC, leaving the hole in the firewall, and the hood now stays in place. I placed a sheet of paper over said hole and a steady stream of air would blow into the cabin.
First mod: ducting the radiator. The sheet would stay flat against the firewall and only blow off when wake from other vehicles washed under the car.
Second mod: custom diffuser that reaches back to the K-member. Sheet is planted.
While down-force is useful, too much hinders economy. Being able to remotely test the pressure will give me a real idea of what's going on and what needs to be done. A certain amount of sensitivity is needed in this gauge.
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