I tried two Hiclones in my 4x4 TD. First off, a lot more intake noise was noticed. Yeah cool. I am guessing due to the RESTRICTION in the intake hose is why more noise was heard. Further more, no improvement in performance and bugger all improvement on fuel economy.
My advice, buy a potato, cut it in half and jam one of the halves in the intake.
1 out of 5 stars