Air Fuel Ratio Gauge Install

[Shaneo]

i have installed a Auto Meter Air Fuel Ratio gauge in my R33 yesterday, all i need to do is connect the signal wire. Does any know which wire to connect this to?

[dondesoto]

i have installed a Auto Meter Air Fuel Ratio gauge in my R33 yesterday, all i need to do is connect the signal wire. Does any know which wire to connect this to?

<{POST_SNAPBACK}>

hook it up to the oxy sensor middle wire on the harness connecting plug , black wire , well thats what i did on my r33 rb25de harness and it works . or alternatively hook it up to pinout 29 on your ecu

[R32Big_boy]

As Dondesoto said, you need to splice it into your O2 sensor, find an ecu pinout diagram and use that to find which wire you need.

[46n2]

i think it's pin 29...

[sproosy]

NICE! i too have my gauge in but havent connected the signal wire. ive posted and no one has NFI about which pin it is on the ECU for a RB20DET.

If worse comes to worse ill just splice it off the o2 sensor wire in inbetween the 02 sensor and ECU, but the pin would be prefrered.

[Bye Evo]

Hey Guys

I need to know this and will post up the details if my contact pulls through tomorrow.

I am installing a Autometer Air/Fuel Ratio Gauge into a Series 1 R33 GTST

Will keep an eye on this topic, but will inform you if I find out myself.

Doing the install Saturday

Cheers, Chris

[Craved]

just use a multimeter and the only one that changes whenyou rev it is the signal wire..

[Shaneo]

thanks guys, i know what i'll be doing tomorrow morning...

[B-Man]

Are the RB20DET and RB25DET ECU pinouts the same ? Where can I get the pinouts for the RB20DET ECU ???? I need to connect my AFR guage and Fuel Computer and don't want to splice in the engine bay.

Cheers,

[46n2]

All you need to do is a google search with the engine type and the keywords ECU Pinout (e.g. "RB20DET ECU Pinout"). The pinout diagrams will have a description with them, and in that description you will see O2 Sensor

[Shaneo]

ok, connected it up to pinout 29. works, however, only on one side of the gauge. does anybody know what the voltage range is on the stock oxygen sensor? because i was getting a negative voltage at one stage using my multimeter. and i know that the Auto Meter gauges are designed for 0 - 1 volt. has anyone installed one of these and it is working correctly?

[46n2]

http://www.autometer.com/download_instruction/837j.pdf

[Beer Baron]

can i just say why bother? the reading you get from these things is next to useless. seems like a waste of time, money and dash space for what is essentially pretty, sparkly LEDs.

[Shaneo]

can i just say why bother? the reading you get from these things is next to useless. seems like a waste of time, money and dash space for what is essentially pretty, sparkly LEDs.

<{POST_SNAPBACK}>

no you can't just say that. if you've got nothing constructive to add to the thread, don't post.