AFR gauge question

djdanny5000

Member
Contributor
:
2007 Mazdaspeed 6 GT Retired: 2002 Protege 5
I have a prosport AFR gauge but it's a narrow band not a wideband gauge and i'm wondering which wire to splice into the stock o2 sensor? Also i'm wondering if a narrow band afr gauge will work because i've read a few times that the speed 6 comes with stock wideband o2 sensors
 
The narrow band AFR gauge is essentially useless on a Speed6. The front O2 is a wide-band and you need a Dashhawk or similar OBD2/CAN device to monitor the AFR from it through the ECU. Your procrap won't work on it. The rear O2 is a narrow-band and you can splice into it and your procrap will work to indicate lean or rich from 14.7, but the AFR measured there is not really used for anything.

I don't have the wire colors right now, but I can get them from my wiring diagram later if you really want the right wire to cut and splice into....
 
The narrow band AFR gauge is essentially useless on a Speed6. The front O2 is a wide-band and you need a Dashhawk or similar OBD2/CAN device to monitor the AFR from it through the ECU. Your procrap won't work on it. The rear O2 is a narrow-band and you can splice into it and your procrap will work to indicate lean or rich from 14.7, but the AFR measured there is not really used for anything.

I don't have the wire colors right now, but I can get them from my wiring diagram later if you really want the right wire to cut and splice into....

I take it your investment portfolio doesn't include an shares of PROC, lol.
 
The narrow band AFR gauge is essentially useless on a Speed6. The front O2 is a wide-band and you need a Dashhawk or similar OBD2/CAN device to monitor the AFR from it through the ECU. Your procrap won't work on it. The rear O2 is a narrow-band and you can splice into it and your procrap will work to indicate lean or rich from 14.7, but the AFR measured there is not really used for anything.

I don't have the wire colors right now, but I can get them from my wiring diagram later if you really want the right wire to cut and splice into....

So that explains alot. thanks for the info cause right now i have it pluged into the front o2 sensor and it's not working which makes sense if it's a wideband sensor. I think i'm just gonna end up getting a wideband gauge
 
So that explains alot. thanks for the info cause right now i have it pluged into the front o2 sensor and it's not working which makes sense if it's a wideband sensor. I think i'm just gonna end up getting a wideband gauge

Why? You dont need a wideband...the car already has one! Get the Dashawk like Forza mentioned. Its cheaper than a wideband and does more.
 
Well i have the cobb AP but i rather use that to monitor KR and have gauges for my AFR and boost and eventually oil pressure
 
Back