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I had a buddy buy a similar device. He claimed to actually experience a "seat of the pants" improvement with the installation. This one installed between the carb and intake manifold.
Aproximately 3 months later the old motor was getting tired and burning more oil, so he tore the engine down for a rebuild.
To his shock the device was gone! Apparently the constant pulsing of the intake cycling had fatigued the brackets and the motor had eaten all the device components. Sure enough the tops of pistons had marks and it appeared had hammered enough the top ring lans collapsed trapping to top ring.
Given this experience I would like to upgrade the answer from "No" to "Hell no don't do it!"