Hi folks. Just stumbed across this forum, and it seems just the place I ought to be The swap involved is a JDM B16A from a Del Sol SiR into a UK-spec MA9 civic that originally had a 1.5 SOHC VTEC-E engine (I believe this was a model that didn't hit the U.S., so knowledge on the subject may be a little limited). I'm on the beg for help - the conversion itself is done (if anyone is interested, I can post up a pretty specific guide to what we've done, just ask ) and we're at the 'electrical gremlins' stage. We've got two minor issues that need adressing - 02 sensor error code and knock sensor error codes. The car smells 'fuelly' and is using a shedload of fuel, and the idle is anything from a rock steady 750 - 850rpm to a slightly manic 3000rpm, apparently whatever it feels like, whenever it feels like it. The engine management light is off when the car is first used, but comes on after a few mile sof driving (spirited or gentle). VTEC engages as it should, and it goes like a little rocket. We are using the original B16 engine loom and the original B16 ECU. We assume it's the 02 sensor issue that's causing the erratic running. The knock sensor is buried under the inlet manifold, so is a pig to see - does anybody know what colour the wires are that I need to extend and run to the ECU from the canon plug on the suspension turret, and which pin on the ECU plug I need to run it to? Onto the 02 sensor... The B16 engine has an 02 sensor mounted on the exhaust manifold (4 wires), and as this is original to the engine and runs straight into the engine loom we assume this is wired correctly (the error code we are seeing is error code '1', apparently relating to the second 02 sensor). The Del Sol had a second 02 sensor mounted after the catalytic converter with a braided metal shield over the two wires coming from it going into the car in line with the a-pillars - we think this is 02 sensor '2', because it's not even attached to the car any more (hence the error code), and we can't figure where to run the wires to. Can anyone shed some light on where we need to run these two wires attached to the second 02 sensor? It feels like we're 3 or 4 wires away from having it all sorted, but we're struggling at this last hurdle. Little help please? Thanks.