This is a cool topic for a beginner like me.
You said the KKM can be done with common tools. That sounds kool. Do they supply clear instructions? Believe me when I say that without instructions I'll be lost.
I'll be asking myself stuff like, where does this filter go, mmmmmmm, maybe here

I was told (and please confirm) that the superchip is programmed to take more air or gaz at proper times. Is this true?
Can't the original chip handle these mods without re-programming?
Will tweaking the chip help performance?
Also, at which point do you change your grade of fuel (Assuming your not using a chip)?