I have a '95 cx hb with a swapped d16z6 and well lets just say that i just hardwired vtec to the ECU and it got rid of the check engien light being on all the time but now when it goes past 4500 rpm or so the light comes of I just checked it and there comes code 21 again What could be my problem now? i mean when i do the 4500 rpm thing and the check engine light comes on if i just shut it of and turn it on again it magically disapears its becomming a real headace and i cannot find a decently priced B18 non-vtec engine around here ......Anyone gots any ideas??