Carb Cheater - What Say Yee?

All his crazy little device does is control the amount of air (signal) the carburetor sees. The reason he needed it, for his lawnmower carb thing, is because he couldn’t jet the dumb thing properly to match the fuel to the air. And I doubt the lawnmower carb had enough circuits to maintain an afr through a range of throttle openings and load variations. It’s unnecessary with a properly sized carb and some decent tuning skills.