1.I have a 91 b16a in a 98 civic ex and my vtec does not kick in at all. B4 i assume my vtec solenoid does not work i wanted to ask if it is fine to have a 99-00 usdm civic si distributor-would that cause the vtec not to work? 2.I have a obd2-obd1 wiring harness with a chipped p28. Instead of this, can I just use a ecu from a 99 si? or will my car go into limp mode? 3.Is the solenoid the same for a d16y8 as a b16a?