[Mr. Wyndham]

I'm not a mechanic by trade, but I believe VVT uses electronics-via the onboard computer-to speed up or slow down the Cam rotations depending on engine load. so it would speed up a little to let air in sooner and exaust out sooner to get a little more power and fuel economy...Don't know if that would effect a cam swap, it would probably make it more difficult to actually swap but that's about it