I like the way the "increased performance" comes from increased fuelling and advanced ignition....
I studied for 3 years at college to gain my city and guilds in motor mechanics, and if you run rich and advanced, you'll coke up the engine and run hot, eventually the engine will suffer from pre-detonation or "pinking" this is where the combustion chamber is coked up with deposits of carbon which glow red hot, these deposits ignite the fuel before the sparkplug has a chance to fire and mostly before the intake valve is closed, this causes the valve to slam closed, sometimes bending it or snapping the poppet right off of the stem....
Indeed an inexpensive way to destroy your engine.
Although i doubt a button with some wire and cable ties is going to do sod all, bit like the Halfords NISMO stickers you see on Fiesta's...