I was wondering how difficult it is to install a v-tec controller and how they work, is it easy to adjust the the v-tec engaging points what is a good one to buy. thanks in advance for the help

 

VTEC (it's VTEC, not v-tec) controllers don't adjust fuel delivery when VTEC engages (as a stock ECU, or aftermarket standalone or piggyback would) , so you're really not helping things much. Just save you're money and get a Hondata or something like that and get it tuned.