A properly insulated intake pipe should keep the heat from the intake air. Using a shroud on the radiator would probably help, too. The biggest problem I see with the vvti motors is controlling the vvti well. If you can piggy back the stock ECU, then it's probably not an issue. At some point I'll be working on controlling it with a standalone, probably the AEM EMS. I am certain the AEM can send a PWM'd signal to the vvti solenoids, but I need to make sure the AEM can read the extra cam sensor and understand how it's used. My understanding is that they have already done some work like this on variable cam timing on Honda (not just vtec, but variable timing, like vvti, in addition to vtec control).