I bought a new Triumph T120 in 2016. That had a snatchy throttle but even more annoyingly (for me) it surged on a constant throttle at lower speeds, say 30-35mph, when riding through a town or village. So I tried a Booster plug. Took all of 5 seconds to fit, unclick one sensor on the air box and join the thing in between.
I read the bumf about it and it sort of made sense.
But did it work, err, no. The only thing I noticed was the exhaust gases smelt more 'petrolly' when ticking over. i.e. rich. Like it was on full choke. So I had visions of petrol washing bores and took it off after one run out. Flogged it on eBay at about half what I paid. Another life lesson.
Others may have had better results but for me, wouldn't bother.