i just recently finished a H22 swap on my 92 honda accord and the ECU that i bought for this motor was a JUN chipped P13. now i was able to test the ECU before i put it in my car on my freinds H22 and it worked fine..it didnt throw any codes of any sort but one thing i noticed about it was that VTEC didnt kick in until about 5800 rpm's. the guy i bought the ECU from claims that VTEC should engage at 4600 and a secondary of 5800 but all it was doing was hitting really hard at 5800. now, when i put it the ecu in my car.. its threw a CODE 21. according to my haynes computer code book, a code 21 is a VTEC spool solenoid valve malfunction or circuit fault ...but accoring to some local perofrmance shops, theres isnt a CODE 21 on a OBD1 P13 which is leading many of my friends to believe that this ECU might be a P72 or even a P13 with P72 base maps because its redline and its VTEC engagement is the same as an integra and the ECU has no codes writen on it whatsoever... so now im really confused?? is there a code 21 and if there is, does it have to do with the VTEC??