A pre catalyst prevents the formation of greenhouse gases by messing with the mixture entering your engine.Yeah, right: before it's even burnt! The power goes down, building the bike costs more but the polar bears will be grateful.
http://www.ttzd.com/tech/precatstech.html
You asked for it- I read some of the stuff- feel even dumber now.
Thieu.
PS: it gan be gutted- life is beautiful!
