Possibly; how do I go about cleaning it out? On my last vehicle, I just removed the intake and sprayed some carb cleaner around and it seemed to help a bit. Can I do the same with the VX?

I just cleaned and oiled my Calmini air filter and upgraded to some Bosch Platinum +2 plugs and it seems to be running a lot smoother; but I'm still using 89 octane.