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Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
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Cheap A/F gauges and stock O2?
I found this Air Fuel ratio gauge on Amazon for $22 (ships free at $25), so I added some filler and bought one. Anybody using one of these cheap gauges with a stock O2 sensor?
http://www.amazon.com/gp/product/B000FJQWS0 |
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05-11-2009, 03:13 PM
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Moderator
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Mike,
Weren't you of the ones telling me that a narrow band O2 reading ain't worth s%$t? Anyways, did a bunch of research on this and came to conclusion that I really need a Wide Band O2 Sensor and a Wide Band A/F Gauge. You can find them for around $200 as a set.
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** 
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05-11-2009, 04:47 PM
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Registered
Join Date: Oct 2008
Location: Buena Park, CA
Posts: 247
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Yeah, I thought Mike was beating that drum with me. At that price point I wouldn't expect much.
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05-11-2009, 04:54 PM
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Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
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Leo doesn't run closed loop with his O2 sensor, which I think is key to one of these working.
BTW I have a wide band O2 sensor, but saving it to use when I borrow a wide band meter. |
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05-11-2009, 05:00 PM
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Quote:
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
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05-11-2009, 06:35 PM
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Network Native
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I'm not sure, but my conjecture is without closed loop control its going to show rich or lean, without a good indication of how much.
I don't plan to mount this one in my car, just hook it up for some amusement and then it can go into a different car. We can give it a try in Leo's car and see what it does. *** If your question is about using a wideband sensor with a narrow band meter? The output of the wideband slowly changes voltage from lean to rich, and the narrow band doesn't change voltage much until a "trigger" point at stoichiometric where it changes abruptly. Unless a meter is calibrated for the sensor curves the voltage won't mean much. |
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05-11-2009, 07:12 PM
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Test away. The O2 wire terminates to the Center Console to nothing. Go for it!
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
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05-11-2009, 07:21 PM
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This is the one I was talking about getting when the funds exist.
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
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05-11-2009, 07:51 PM
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Registered
Join Date: May 2009
Posts: 31
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Unless you are running boost, why would you want one?
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Imre 1985 928S, 5-Speed, DIY Supercharged http://norcal928.org/DIYSC/index.htm, H-pipe, 12.8sec. |
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05-11-2009, 08:01 PM
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Network Native
Join Date: Jan 2007
Location: SoCal
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On my my 85 Euro I intend to sharktune it, and I don't think the Sharktuner on the LH2.2 can pick up A/F directly. For the other cars, just curious, maybe try some tuning with the more limited controls.
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05-11-2009, 09:02 PM
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Quote:
 The other I was thinking of an Oil Temp Gauge.
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
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05-12-2009, 04:59 AM
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Network Native
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Location: SoCal
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Oil temp is fun, literally hotter the oil the more fun you are usually having.
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05-12-2009, 11:37 AM
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Registered
Join Date: Mar 2007
Location: Castle Rock, COLORADO
Posts: 488
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Quote:
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Dave 82 928 Weissach #14 |
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05-14-2009, 07:41 PM
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