OK guys. This has been an interesting journey thus far.....Got the motor, ecu and everything finally working. Vtec pulls hard and motor was running smooth, UNTIL last night we decided to open it up on the highway. Well in 5th gear we were probably doing 90 or so, and when the vtec was suppose to hit (5000rpm) the most awful clanking loud noise I have ever heard came from our car. No Vtec. She took it out of gear and the noise stopped. I thought we blew it up or something...but No engine light, no smoke, nothing. The RPMs went down and the car ran fine.......but now NO VTEC. HELP!!! The car idles fine and still runs smooth, but the vtec will not engage. Any suggestions???