So I swapped a 95 accord sohc-vtec into my 97 accord se (non-vtec). The swap was out of necessity, so I don't care if it has "vtec" or not. I converted the obd-2 engine harness to match the obd-1 distributor , swapped the egr valves and swapped out the injectors. Other than that everything was plug'n play. Now I have codes 71,72 and 74 while using the obd-2 ecu. I wanted to stay simple and cheap and thought this would work fine... but I don't know why it's throwing these codes... the engine seems to run fine (I don't hear any detonation or anything), although the power band does seem a little weak in the upper rpms... any help would be greatly appreciated.