A/F meter

belgiumbarry said:
does anybody happen to know on which wire the A/F meter to connect ? :dontknow:
Click to expand...
Goes to a fitting on the exhaust pipe. It should tell you where on the instructions
 
belgiumbarry said:
yes i know...:p :D .. but which wire... each O2sensor has 4... :confused: :dontknow:
Click to expand...
Im confuzed. I have exactly the same thing. The four sensors that are original go bac in the 4 holes supplied with the BB exahust. You must add a
another BUNG The sensor screws into it and you just plug in the male/female connectors from the AF gauge . Yes?
 
nycstev said:
Im confuzed. I have exactly the same thing. The four sensors that are original go bac in the 4 holes supplied with the BB exahust. You must add a
another BUNG The sensor screws into it and you just plug in the male/female connectors from the AF gauge . Yes?
Click to expand...

nono, Steve... my A/F meter has no extra plug to connect ...

ROE RACING just replied... connect to one of the O2 wires going to the VEC3.. ;)
 
nycstev said:
Im confuzed. I have exactly the same thing. The four sensors that are original go bac in the 4 holes supplied with the BB exahust. You must add a
another BUNG The sensor screws into it and you just plug in the male/female connectors from the AF gauge . Yes?
Click to expand...

Mine (AEM) is the same way...has it's own O2 sensor.
 
If you hook it to one of the existing O2's then you will not get a true wideband reading. Most A/F gauges come with an additional O2 and bung that you have welded into the exhaust.:dontknow:
 
My A/F meter came with its own O2 sensor that installed with a bung into the exhaust. In total I have 5 O2 sensors on my truck.
 
A stock, narrowband sensor (the type where you use your stock O2 sensors) has a 14.6 to 14.8 : 1 swing.

Most wideband gauges/sensors (ones that come with its own O2 sensor) read from ~9-10:1 to 21.0:1.

With a narrowband once the a/f mixute gets out of that small range it really does not know where its at, it just knows if its in between, higher or lower. But how high? You dont know. How low? Again you dont know. "Most" vehicles will run around 12:1 at WOT, all a narrowband gauge would read is rich.. it could be 10:1 and you would not know any different since it would be showing the same thing.. rich.
 
I don't recommend using a system that ties into excisting wiring.
Tying into the signal circuit could really screw up what P.C.M. see's.If possible,see if you can acquire a install kit !!
 
i tried one that tied into the factory sensor on my z71 and it didnt work well. i ended up gettin a uego(sp), and i love it, i need to get one on my srt.
 
SchuettS said:
A stock, narrowband sensor (the type where you use your stock O2 sensors) has a 14.6 to 14.8 : 1 swing.

Most wideband gauges/sensors (ones that come with its own O2 sensor) read from ~9-10:1 to 21.0:1.

With a narrowband once the a/f mixute gets out of that small range it really does not know where its at, it just knows if its in between, higher or lower. But how high? You dont know. How low? Again you dont know. "Most" vehicles will run around 12:1 at WOT, all a narrowband gauge would read is rich.. it could be 10:1 and you would not know any different since it would be showing the same thing.. rich.
Click to expand...

that's exatly what they stated... i wanted the "cheap" version ...just to see if OK .. or rich... just to alarm me if i see to lean conditions... even with a wideband ( expensive ) i don't think you gonne interfere PCM only reading your A/F info...:dontknow: i think your gonne hook up some profesional equipment to do that....
 
If I remeber correctly, I have also 4 sensors as std but only the first 2 (closest to the engine) are connected. :dontknow:
I removed the un-connected one in the left tube to install the Bosh sensor that came with the autometer wideband sensor.
(still have to connect to the gauge dough)
 
Floor said:
If I remeber correctly, I have also 4 sensors as std but only the first 2 (closest to the engine) are connected. :dontknow:
I removed the un-connected one in the left tube to install the Bosh sensor that came with the autometer wideband sensor.
(still have to connect to the gauge dough)
Click to expand...

is this Bosh a 2 wire or 4 wire connection ? :dontknow: ( 4 wires are heated types.. )
 
welwel... i connected the A/F meter to the O2 sensor .....o my god... that led circel is flashing constantly from red ( lean ) over orange ( good ) to green ( rich)... one thing i see is a bit constant red when goosing pedal and a bit constant green when pushing the pedal... wouldn't be misplaced in a dancing...:eek: :D ...

is this normal ? :dontknow:

either i will cut the power from it or place a sticker on it's window...:p :D
would make me crazy within a 100 miles i suppose... i placed it in the tripod above.. so it's really close to my face...:eek:
 
at idle a narrowband and a wideband will jump around, a narrowband more noticeably.

Since your gauge is narrowband it will dance alot even past idle since its range is so small.

Thats what I was trying to point out with my last post.

The PCM is constantly checking voltage coming from the O2s, if the voltage is too high or too low itll adjust fuel accordingly.. meaning youll constantly be in and out of the small range of a narrowband.

Barry, it you want just for fun.. hook up a voltmeter to the wire you connected your gauge to.. Your voltmeter will be constantly up and down, which is what the gauge is going off of.

EDIT: I use an aem eugo wideband.. prices are always coming down on these. Pretty soon they'll be pretty cheap.
 
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