The VAFC taps into your MAP and TPS sensors and fudges the values that the ECU is 'seeing'. By doing this you can adjust fuel mixture. Its a great system for the price to tune for each new modification but it is rather limited in its application.

To install it you locate the appropriate wires, splice them and run them into and out of the VAFC. As long as you are familar working on wiring then its not hard at all to install - however if you have a mechanic you use to work on your car they probably wouldnt charge that much for installing it anyways.

If you go with an aftermarket ECU such as Hondata, you'll need to take it to or send it to a hondata dealer to send to hondata to convert it. www.hondata.com - there's a couple of stages available.

Whichever system you go with you will need to spend some time on the dyno to tune it and optimize its operation.

RJ