I've got the VAFC in my car and love it... Hide that SOB though, cause if it gets stolen with your stereo (if you have one) then you're faulked... I was atleast, try 14 mpg, lots of smoke, and no vtec (well I couldnt feel it atleast)... I now have it in my glove compartment (so that I can lock it) I havent tried the fields, so I cant say bad things about it, but the VAFC is easy to change around, supposedly has more features, and looks pretty tight (passengers will envy you)... I also got better gas mileage once I put it in and tuned it.