Lacoste82 Posted August 25, 2013 Share Posted August 25, 2013 Hi - im currently in the process of instaling some gauges in my Jap spec. Supra n/a. All is going well, there is however one small problem that im not able to figure out myself. one of the gauges is a Oxygen/lamda sensor gauge, which measures the air/fuel ratio, if im not mistaken. It has 4 cables/cords running from it: Red(ignition live), Yellow(Battery), Black(Earth/-) and a green signal cable, its the last one that im not sure about. Ive posted a small installation guide, similar to the one that came with the gauge. The problem is that i need to find the correct PIN on the ECU! Or should i just cut the wire from one of the Oxygen sensors and solder the Green wire in between? What puzzles me is the guidelines regarding green signal cable: "This cable/cord must not connect/touch a positive connection. The Oxygen sensor only has one wire running to/from it. So where should i connect the green signal cable? ECU? Oxygen sensor cord? Thx in advance! Mikkel Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted August 25, 2013 Share Posted August 25, 2013 To be perfectly honest fella, its a complete waste of time fitting a gauge that reads off the std lambda sensor, if you just want another gauge to look at then go ahead, but it wont tell you anything, if you want to monitor AFRs then you need a dedicated wide-band lambda sensor and gauge. Quote Link to comment Share on other sites More sharing options...
Lacoste82 Posted August 25, 2013 Author Share Posted August 25, 2013 Hi Ricky, i couldnt agree more - This one is the fifth and last gauge and its only there to fill out the last open spot in the A-pillar mounting(3 in the upper glove box area and 2 in the a-pillar) The general idea is, that its not to much use, but it looks alot better than an open slot! Quote Link to comment Share on other sites More sharing options...
Lacoste82 Posted August 25, 2013 Author Share Posted August 25, 2013 What about if i bought a new wideban sensor, made a new thread in the exhaust manifold where it could be located and then connected my AFR gauge directly to that signal cord from the new wideban sensor? Ofcourse keeping the 2 OEM Oxygen sensors! Would that work? Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted August 25, 2013 Share Posted August 25, 2013 You will need a controller to run the wide-band sensor, most are built into the gauge, have a look at the Innovate motorsport and AEM range, did have a quick look at the manual for the lambda ECU pin out but its not listed, maybe runs the same as the TT? Quote Link to comment Share on other sites More sharing options...
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