Hi, I'm new to the forums and I have a problem with my engine. It's a JDM B16a in a 89 CRX Si. I just did the swap about christmas time. Just a few days ago my car started making a vibration noise in 2nd gear. It would only vibrate around when vtec kicked but I'm not sure if it's the vtec doing it. It hasn't been doing it on any other gear and the vibration would be on and off. It would happen alot of the time in 2nd gear, and it wouldn't happen always at the same RPM. I worry about it because I'm about to turbocharge my engine soon (month or so) and I have no idea what it could be. Does anybody have a suggestion on what it might be?