Sunday I decided to remove my Injen air intake and put back the original part.
The reason is that my "Check engine" light came on and off for the past 2 months. The code is related the O2 sensors and I have to take the VX to the dealer. I don't want Isuzu to blame the problem on the Injen air intake.

I noticed that beside the engine sound, there is not much difference in the performance and if I had to do it again...I would never install this at the first place. Just because the money spent on the Injen kit was not really worth it.

Michael