So I just installed my ATI pod and my new Propost Premium Boost, Premium Oil Pressure and AFR gauges.

When I bought the AFR the guy at prosport (not Ryan) showed me how to set the gauge to read 5V (or wideband 02). He also said to tap the gray wire on the sensor.

When I got home I couldnt find any gray wires, my front 02 only has 2 black, 1 white and 1 blue. Did some research online and found a few people stating that Blue is the signal wire. So I tapped it test, and I was just getting a steady 15.5 on the AFR. No matter if I was in boost or idle it stayed at 15.5

So I sent prosport an e-mail and Ryan was very helpful with his reply and said he thinks the white wire needs to be tapped.

I then tapped the white wire, and well all I get is a steady 14.7 reading. No matter what I am doing it stays at 14.7.

Here is a pic of the wire I tapped, and underdtand this isnt the file wiring job it was just so I could see which was the correct wire before I cleaned everythign up.

http://i98.photobucket.com/albums/l260/cpages2/IMG00065.jpg

http://i98.photobucket.com/albums/l260/cpages2/IMG00064.jpg

just need some help, am I taping the wrong wiring harness altogether?? What could be wrong? Prosport cant give me a solid answer and I cant find a write up on how to wire up their AFR gauge.

Any help is appreciated.

Thank You,

Mike

You can NOT tap any wires on the front 02, doing so will not give any readings on your gauge and will also make the car not run properly. It could also potentially damage the sensor or ECU. The sensor is not a standard wideband and your gauge cannot read it.
Remove those wires immediately and securely tape up the sensor wires where you tapped them, using 3M electrical tape.
If you want wideband readings from that gauge, you will have to buy a separate wideband sensor and mount it in the manifold

strange... Prosport told me directly to Tap the white wire on the front 02 sensor. :( :( :(

- Mike

according to fastwrx.com's website the prosport AFR gauges are not wideband.

If that's true, Prosport is a bunch of f*cking idiots.

1) The front O2 is a NOT A WIDEBAND
2) The front O2 is what the car uses to run in Closed Loop. Any disturbance to the signal could cause the ECU to royally screw up the way the car is running
3) Looking at the output of a narrowband is totally useless. It's just blinknelights for your dashboard.

http://www.fastwrx.com/pranairaga.html

This is an affordable NARROWBAND air/fuel meter that hooks up to your Subaru's rear oxygen sensor to give a general indication of the oxygen content of the exhaust...

Note: This is NOT a wideband air/fuel meter. This gauge is basically equivalent to the "blinky-light" narrowband air/fuel meters, but without the annoying blinky lights.

It's still blinkenlights just with a needle (blinkenneedle? needlelgihts?).

It can only say "Lean, Stoich, Rich" and nothing else.

i was looking at getting some prosports because they are much more affordable than some other options, but their AFR is certainly not one i would buy. fortunately, i just want to monitor my near-stock setup on the track.

back to the topic...do you have a DMM? that should be of tremendous help in determining the correct wires to connect. even a cheap one can help you figure out what you need to know. i would expect prosport to know their own gauges better than fastwrx, but they are in disagreement as to which O2 sensor to connect to.

Prosport has 2 A/F gauges. On their website, they are under "Digital".

This gauge...
http://prosportgauges.com/digital-air-fuel-ratio-gauge.aspx
is a standard narrowband monitor with the blinky lights and a digital readout. It cannot be switched to monitor 5v so no use on a WB02.

However this gauge...
http://prosportgauges.com/digital-air-fuel-ratio-and-volt-gauge.aspx
can be switched to monitor a 5v WB02 signal and the readout will be fine. The problem is, if you look at that page, it makes the assumption that "late model Subaru's & other's" have a stock WB02, which we all know they don't.

So to the op, I don't know which one of those gauges you purchased, and your car doesn't have a Wideband 02 unless you installed one. If you do get an Innovative WB02, you can calibrate the digital output of the sensor and it would work with the second gauge I linked to.

In short, you filled a hole in your gauge cluster until you get a WB.

/Brox

yeah I have the second gauge and it is set to 5v.

- Mike

Doesn't matter. Even the second gauge, when plugged into a narrowband sensor, is just pretty colors on the dash.

Yes, it's colors on the dash, but to you can tap the rear o2 sensor wire going into the ecu. It works fine

1) You're still playing with fire and hoping the ECU doesn't notice
2) There's still no point other than bling

listen just so everyone knows, I didnt buy this gauge just for pretty lights and thats not what I want.

I bought it because when I went to there shop they said I ould use this gauge to pull accurate readings from my Stock WideBand 02 sensor. I wouldnt have bought it if it didint serve a purpose.

-Mike

Mike,
Can you return it? The shop you bought it from ripped you off if you were looking for a real WBO2 AFR display.

Your other option would be to keep the gauge and get something like an Innovate Motorsports LC-1, which is a real WBO2, to feed the gauge.

cpages2:
The front O2 sensor on your car is wideband (for lack of better term) because it is not 0-1 volt (narrow) and it is not 0-5v (wideband) it is 0-4v (so maybe we should call it "medium band")

Anyway, they are correct that same(front) O2 has no output signal and thus you cannot just tap into it like you can on the rear sensor. So like the most recent post says you can get an innovate and use our gauge to display the output signal from the controler, use it as is on the rear sensor as a narrow band or return it for a full refund.

Prosport, check out the voltage response plot for the stock front O2 sensor. It's sigmoidal like a narrowband (just over a wider range) not linear or logarithmic (depending on brand) like a wideband. You still can't get useful data out of it anyway. Somewhere in the bowels of RomRaider's forums, there's a plot and comparison to a WBO2. It's not good.

you cant expect to get the same readings from a Narrowband for 50-80$ compared with a wideband system for 250-400$ cmon now..

you get what you pay for... i have the prosport digital boost gauge and its great. works pefectly fine.. you cant say prosport sucks cause someone purchased a narrow band not reading up on it or asking before hand and expecting it to work like a wideband...:furious: :lol:

prosport +1

hey prosport when is the wideband 02 sensor and gauge gonna be out?