I could be wrong, wouldn't be the first time, but a while back I read about a lawsuit that was against one of those sellers. The guy who bought it owned a Fiero in Arizona, very nice GT with low miles... lol anyhow the mod leaned it way out, running it hot and eventually melting the top of the piston.
Anyhow leaning a car out to an extent will make more power, but is bad for it, and this is also why they claim better mileage because of less gas being used.
EITHER WAY, DON'T DO IT! lol, I don't wanna see your zuk blown up, although I do need parts...
