did you hook up the VTM signal? make sure that you have the vtec wires going to the correct place. its very specific that one wire goes to the harness and one wire goes to the ecu. and you have to cut the factory wire. ive seen people just add onto the vtec wire. its not a tap, its an intercept.

plus, too, check your oil level.

and make sure you spaced your grounds with the brown being closest to the ecu