To be honest I loved it - I say 'loved' as I have now replaced it for the Vararam. Only reason I changed it out was that I won the Vararam in a charity raffle and the gains are supposed to be better than the Injen. Anyway I may be selling my Injen in the near future if you are interested in a second hand one (Has ~15k miles on it).

How do you like the Injen? I'm planning to get me one.