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Old 01-11-2015, 04:58 PM   #1
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Wideband O2 sensor

Hey guys, I decided I need to get a Wideband O2 sensor so I can tune my carb to be spot on at all throttle positions. What is the cheapest way I can do that? I don't need anything fancy at all and I don't want it going through my ECU unless the Torque app can read it somehow.

I basically want to plug the wideband into my O2 sensor bung, and then plug it into my laptop or a cheap gauge. I also don't need laboratory accuracy. Within a tenth or two is fine for me.

Will one of these $140 ebay Wideband sensors work well enough? Is there one that goes into USB plug? Can I get a program on my laptop to read it? I have a decent Asus 550 so I probably have enough computing power to run most programs I would need
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Old 01-11-2015, 05:20 PM   #2
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Is the sensor and the guage all that I need?
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Old 01-11-2015, 05:28 PM   #3
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My real question is this:


If I buy this: Innovate LC2 Wideband DB 52mm Kit w O2 Sensor Blue Gauge LC 2 3795 | eBay


Would I be all set to install it into my car and drive it down the road? Is there anything else that I need?
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Old 01-12-2015, 01:00 AM   #4
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Aem makes a very good wideband I use it to datalog with my computer all the time. It is definitely a key part to tuning the car. And I plugged my wideband sensor into my rear O2 sensor bungs too.


2004 Mustang GT 5 Speed Full Bolt On 360rwhp 440rwtq
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2004 Mustang GT 5 Speed
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Old 01-12-2015, 01:02 AM   #5
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The sensor and gauge is all you need also.


2004 Mustang GT 5 Speed Full Bolt On 360rwhp 440rwtq
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12.1 @ 117.9 (1.7) in 1/4th
7.6 @ 92.1 (1.6) in 1/8th
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Old 01-12-2015, 01:02 AM   #6
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+1 on AEM.... Don't cheap out on something like this that is crucial for tuning the car properly.
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Old 01-12-2015, 12:03 PM   #7
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The Innovate LC-2 is a great wideband system, however I would recommend an analogue gauge rather than the digital unit--the "needle" ballistics (direction, range and velocity of motion) will tell you things about changes in air/fuel ratio that cannot be observed with a digital readout.

±0.1 "AFR" is as good an accuracy as you will get with any "auto-enthusiast" grade wideband system (anything that costs less then $2500), and that is only in the "center" range around lambda (λ) 1.0 (14.7:1 AFR), say (15.5 to 14.0 AFR). At the extremes (say 22.0 and 11.0) it drops to ±0.4 to ±0.6 AFR

Also, you speak of wanting to " tune my carb"; Do you actually have a carburetted engine? I suspect not, and if not you will need a tuning system (Delta Force, SCT, DiabloSport, Tweecer, etc.) to make changes to the tune.
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Old 01-12-2015, 06:00 PM   #8
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Quote:
Originally Posted by cliffyk View Post
The Innovate LC-2 is a great wideband system, however I would recommend an analogue gauge rather than the digital unit--the "needle" ballistics (direction, range and velocity of motion) will tell you things about changes in air/fuel ratio that cannot be observed with a digital readout.

±0.1 "AFR" is as good an accuracy as you will get with any "auto-enthusiast" grade wideband system (anything that costs less then $2500), and that is only in the "center" range around lambda (λ) 1.0 (14.7:1 AFR), say (15.5 to 14.0 AFR). At the extremes (say 22.0 and 11.0) it drops to ±0.4 to ±0.6 AFR

Also, you speak of wanting to " tune my carb"; Do you actually have a carburetted engine? I suspect not, and if not you will need a tuning system (Delta Force, SCT, DiabloSport, Tweecer, etc.) to make changes to the tune.

I have an edelbrock 1406 with a 60gph electric gravity feed fuel pump feeding it at 5.5 PSI. My carb alone is cheaper than those tuning systems lol. Plus more potential for horsepower (fuel+air fog as opposed to air going in and fuel being pissed into the engine from an injector).
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Old 01-12-2015, 06:05 PM   #9
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Quote:
Originally Posted by Speed_Mister View Post
Aem makes a very good wideband I use it to datalog with my computer all the time. It is definitely a key part to tuning the car. And I plugged my wideband sensor into my rear O2 sensor bungs too.


2004 Mustang GT 5 Speed Full Bolt On 360rwhp 440rwtq
Could I just use the O2 sensor, and then install a software onto my laptop that allows me to plug the O2 sensor right into the lap top? That is what I would do until I can afford a gauge
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Old 01-12-2015, 06:32 PM   #10
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Wideband O2 sensor

If you have your rear O2 sensors turned off you can do what I did and put the wideband sensor where one of the rear O2 sensors would go it fits perfectly. The O2 sensor can not function as a wide band but you can us the o2s bung for the the wideband to screw into as I stated before.

And yes you need a 5 pin FireWire cable they are a bit hard to find you have to cut the wire open pull the wires apart preferably solder wires to gather and heat wrap them: the yellow (analog 1) or brown (analog 2) wire from the FireWire goes into the "datalog wire" or "analog wire" from your Wideband, black from the FireWire cable goes to a ground, and red FireWire goes to a 12v source. I have it set up in my car. I think instructions can be found on sct website about dataloging. And when you data log you have to select the brand wideband to get a correct reading in your datalogs.


2004 Mustang GT 5 Speed Full Bolt On 360rwhp 440rwtq
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2004 Mustang GT 5 Speed
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12.1 @ 117.9 (1.7) in 1/4th
7.6 @ 92.1 (1.6) in 1/8th
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Old 01-12-2015, 06:44 PM   #11
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Quote:
Originally Posted by Speed_Mister View Post
If you have your rear O2 sensors turned off you can do what I did and put the wideband sensor where one of the rear O2 sensors would go it fits perfectly. The O2 sensor can not function as a wide band but you can us the o2s bung for the the wideband to screw into as I stated before.

And yes you need a 5 pin FireWire cable they are a bit hard to find you have to cut the wire open pull the wires apart preferably solder wires to gather and heat wrap them: the yellow (analog 1) or brown (analog 2) wire from the FireWire goes into the "datalog wire" or "analog wire" from your Wideband, black from the FireWire cable goes to a ground, and red FireWire goes to a 12v source. I have it set up in my car. I think instructions can be found on sct website about dataloging. And when you data log you have to select the brand wideband to get a correct reading in your datalogs.


2004 Mustang GT 5 Speed Full Bolt On 360rwhp 440rwtq
That doesn't sound too hard to wire to be honest. So I have to wire it into my ECU in order to view the AFRs on my lap top? I was hoping I could just have power, ground, and a USB output into my lap top.

What is the name of a program that I can use in order to read the AFRs on my laptop?
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Old 01-13-2015, 11:55 AM   #12
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You will need a tuner plugged into you obdII and plug from your tuner to your laptop you need the 5 pin FireWire plugged into your tuner. And I use livelink 6.5 to datalog to read a/f ratio.


2004 Mustang GT 5 Speed Full Bolt On 360rwhp 440rwtq
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2004 Mustang GT 5 Speed
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12.1 @ 117.9 (1.7) in 1/4th
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Old 01-13-2015, 06:02 PM   #13
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Theres no way around getting a tuner? Tuners are pretty pointless when you have a carburetor and MSD controlling the ignition. I just want something so I can see my AFRs and then get things done with my caveman tools. I feel like some people don't understand I am no longer using EFI. I have an edelbrock 1406 4 barrel carb that feeds my car pure testosterone. carbs using the same afr as an efi system will yeild about a 7-10% horsepower gain over EFI. That's 26 crank hp and it costs next to nothing.
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Old 01-13-2015, 06:13 PM   #14
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Get the Innovate LC-2 and an analogue gauge--all will be fine. Innovate's MTS system lets you log AFRs to a laptop using their free software--though in my experience (which pre-dates any sort of EFI, O2 sensors or electronic ignition) just observing an analogue WB gauge will tell you what you need to know.

Have you completely abandoned the EEC-V ECU?
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Steeda UDPs, Ralco flywheel, RAM HDX clutch, 3.73s, 262 rwHP/305 lb-ft.

New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq
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