Link G4 - Ect And Wideband Wiring

[d-ranged]

I need to wire in my PLX Devices SM-EGT and SM-AFR into my Link G4.

I THINK you need to wire them into the ECU wiring loom and set the link to recognise them but i'm not sure and a bit of a twat when it comes to this stuff.

Could someone have a look at theses manuals for me and let me know which wires i need to cut and wire the sensor into please?

SM-AFR (Wideband) - http://www.plxdevices.com/support/manuals/SM-AFRGen2UsersGuide.pdf

SM-EGT (Exhaust Temp) - http://www.plxdevices.com/support/manuals/SM-EGTUsersGuide.pdf

ECU Wiring Diagram - http://img.docstoccdn.com/thumb/orig/101652534.png

From that diagram there is obviously two pinouts for the two lamdas but i only need one i think, but which one???

I cant see anywhere that the EGT would wire into though?

Really appreciate any help

[89CAL]

Do you have the expansion harness for the G4? You can use this to wire in additional sensors.

But if you are only runnning the 1 wideband and dont need the two standard narrowband sensors then you could use one of the signal wires as the input for the wideband and the other for the input for the EGT sensor.

I've wired my wideband analog out to the stock 02 sensor (middle wire in the plug from memory) and it works fine.

[KiwiRS4T]

Email Link. They are normally very helpful although it is Christmas just now:

http://www.linkecu.com/contactus

or try the forums:

http://www.linkecu.com/forums

[89CAL]

Best thing to do is get the Link software and look at the pin fuctions and pinout pages in the help screen. This tells you what everything does and will give you an idea on what you need to do. I would buy the expansion harness, that way you can use one of the AN Temp wires on the expansion harness for your EGT sensor and then cut the Front 02 sensor plug off and wire the wideband in there.

Then you set AN Volt 'x' to be a wideband (can configure this in a Cal Table, voltage to corrosponding AFR) and AN Temp 'y' to an NTC temp sensor or whatever signal it is outputting

[d-ranged]

Do you have the expansion harness for the G4? You can use this to wire in additional sensors.

But if you are only runnning the 1 wideband and dont need the two standard narrowband sensors then you could use one of the signal wires as the input for the wideband and the other for the input for the EGT sensor.

I've wired my wideband analog out to the stock 02 sensor (middle wire in the plug from memory) and it works fine.

No i don't have the expansion harness.

So I can wire in the wideband sensor to tthe 29 on the ecu and egt to 55?

Or do you mean the actual wire from the plug?

[89CAL]

You can do either.... But it looks like the rear 02 sensor is not an adjustable setting in the Link software. So You can wire it up to one of the AFM signal wires (assume you would be running MAP with a link) and change that to a GP Temp setting and put your settings in the Cal table.

So basically without an EXP harness, use one of your AFM wires for one, and your front 02 sensor wiring for the other.

Should work fine if its setup properly

[d-ranged]

You can do either.... But it looks like the rear 02 sensor is not an adjustable setting in the Link software. So You can wire it up to one of the AFM signal wires (assume you would be running MAP with a link) and change that to a GP Temp setting and put your settings in the Cal table.

So basically without an EXP harness, use one of your AFM wires for one, and your front 02 sensor wiring for the other.

Should work fine if its setup properly

Yes i will be using the map sensor.

So how do i set the Link to recognise them through those wires?

Thanks so much mate, really appreciate it!

Merry Christmas!

Edited December 24, 2013 by d-ranged

[89CAL]

Download the software and look in the help files. In G4 plug-in ECU installation manual go to pin functions and it tells you what all the channels do. Look at the ones that correspond to the items you are replacing. Best thing to do is just download the software and look in the help files for all your answers. I wired my car up doing this. It's all there, just a matter of finding it. The search in the help files is actually not to bad