HOT ROD Magazine has done several stories and tests on compressed-air supercharging, and we are bringing this story, which was posted in 2014, back to the surface because the concept has a renewed ...

Air compressors are handy for DIYers to have around ... Then, open the drain valve at the bottom of the tank to depressurize it. Next, remove the 1/4-in. line going to the unloader valve, as ...