440 turbo AFR guage
 

Looking to fit an AFR guage and wanted to know which is the signal wire coming from the lambda sensor back at the ECU
Regards
Kevin

you wont get much of a useful reading from this signal it will just vary all the time up and down about twice a second from weak to rich and will be meaningless ...

you need 2 tap into the black wire from the sensor using a wire tap which are cheap 2 buy and they only jump alot if using a 1-2 wire sensor (non-heated) or if you have a narrow band gauge with a wide band sensor

Thanks for the info, all wired in and managed to have a look at the ECU but cannot find a black wire going to it, would it have changed in the wiring harness, dont fancy taking the ECU from its mounting to look at the pin number to find it. A bit tight getting in there.
Regards
Kevin

dont go from ecu go from the sensor as its much easier to find plus you dont want 2 to damge any other wires which your more likely to do the closer you are to the ecu