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Thanks Brian, I saw that as well... The JDM/US ECU unlike the Euro version of the K20A ECU needs to see the heater working presumably for emissions if it doesn't it ignores the O2 sensor. Basically pin A22 needs to see 12+ volts coming from the heater circuit which is switched by pin E8 (heater...

hmmm, just had a mate looking at the pictures of the Manual he reckons there're from a B18 manual not a K20A... You can see the references at the bottom all referring to B18's. He tells me that PHO2S + goes to A4 and PHO2S - goes to A9

Which two???

I figure I'm getting off lightly with just a beer :P :worthy: Only thing I'm a little confused about is the pin count. Looking at the photo of my ECU pins. The left connector has 31 pins next to it 23 pins and the right 31 pins. I'm presuming that ECM/PCM C is the left hand connector...

It's a four wire O2 sensor. Two black, one white and one green. Black are heater wires, white is signal + and green signal - Only using one O2 sensor, before the cat. So where do they go? Answers on a postcard please ;)

Now you're starting to get technical on me :D The O2 sensor is a Denso It's marked as follows: DU2 DENSO 192400-1090 03D26 Can anyone help... Pic of serial number Pic of pins Pic of Case Pic of Action :o

I think is must be compatible because it's been remapped by Hondata. In fact I'm sure it's a US ECU becaue we had to make a mod to ECU to get it to work right with the JDM (a resistor needed to be wired in because of a sensor not present on the JDM that the US ECU was looking for - whatever it...

Hi all, I've got a Lotus Elise (hence the subject :D ) with a Honda K20A JDM lump in the back of it. It goes like a cut cat but I have a couple of minor issues still to sort out. I'm not sure what ECU I've got. On the side of the ECU there is a serial number 37820-PRC-013 2070-100532. Does this...