LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Dynotune Wideband Air/Fuel Ratio Gauge

Old Jul 7, 2007 | 02:11 PM
  #1  
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Dynotune Wideband Air/Fuel Ratio Gauge

Anyone using one of these?? I'm thinking about getting one after i get my motor back in.. I'm thinking it would be nice to have and know what your A/F is all the time

Here's a link

Dynotune Wideband A/F Gauge
Old Jul 7, 2007 | 06:52 PM
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Ya will only use it once to tune the car after that it is just along for the ride.
It is not critical to keep A/F ratio dead nuts an any number. To do that ya would have to have a 500 dollar weather station to go along with the A/F meter
Old Jul 7, 2007 | 07:05 PM
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Originally Posted by 1racerdude
Ya will only use it once to tune the car after that it is just along for the ride.
It is not critical to keep A/F ratio dead nuts an any number. To do that ya would have to have a 500 dollar weather station to go along with the A/F meter
Thats true, i agree. But it would be something i would like to have to catch a possible problem at some point.. Ya know..
Old Jul 7, 2007 | 07:27 PM
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I have the fast dual wideband. It monitors each side or can average the two together.
http://fuelairspark.com/Products/details/meter/over.asp
Old Jul 8, 2007 | 11:27 AM
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The purpose of the complex fuel control programming in the PCM is to maintain the A/F ratio, in spite of the weather - its got barometric pressure and ambient air temp covered, just can't compensate for humidity. I'd say watching it, to insure it is where it is supposed to be is a good idea. One thing to keep in mind though - the wide-band sensors have a much shorter life than the stock narrow-band sensors. And a bit more expensive to replace. You might not want to have it mounted permanently.

I've been thinking about this one..... on the expensive side, but includes dual sensors, an alarm function, and a relay function that can do things like interupt a nitrous system on lean A/F ratio.....

http://www.altronicsinc.com/pages/o2alert.html
Old Jul 8, 2007 | 01:35 PM
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Originally Posted by Injuneer
The purpose of the complex fuel control programming in the PCM is to maintain the A/F ratio, in spite of the weather - its got barometric pressure and ambient air temp covered, just can't compensate for humidity. I'd say watching it, to insure it is where it is supposed to be is a good idea. One thing to keep in mind though - the wide-band sensors have a much shorter life than the stock narrow-band sensors. And a bit more expensive to replace. You might not want to have it mounted permanently.

I've been thinking about this one..... on the expensive side, but includes dual sensors, an alarm function, and a relay function that can do things like interupt a nitrous system on lean A/F ratio.....

http://www.altronicsinc.com/pages/o2alert.html
Thats a nice system.. but pretty cashy..

But as for the sensor going out? Why is it they don't last as long? Just cause it more complex?
Old Jul 8, 2007 | 02:29 PM
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my buddy bought an AEM one off ebay brand new for like 140 bucks. The wideband looks nice. I think i'm going to get one of those
Old Jul 8, 2007 | 02:43 PM
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I've seen those too. But i favor the Dynotune one better.. Just cause it only has the digital readout. I don't like the little light that circles the outside of the gauge.
Old Jul 8, 2007 | 02:53 PM
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Just guessing, but the Bosch wide-band is actually made by starting with a conventional Nernst narrow-band sensor, and then adding a top layer called an "O2 pump". There's a tiny diffusor hole that exposes the exhaust gas to the internal sensor. Apparently the O2 pump layer and the diffusor are more sensitive to accumulations of carbon and hydrocarbons. The stock narrow-band sensor has to be good for 50K miles to meet EPA rules, with a single point of accuracy. The wide-band sensors focus more on accuracy over a wider range of A/F ratios, rather than on long life.
Old Jul 8, 2007 | 06:27 PM
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I use the Innovate LM1, no problems here. I plug it in when I need it, log it on my laptop.
Old Jul 9, 2007 | 09:25 AM
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Originally Posted by sandman2100
I use the Innovate LM1, no problems here. I plug it in when I need it, log it on my laptop.

It's the one I have too.
Old Jul 9, 2007 | 09:29 AM
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Any of you two have a pic of your LM-1 in action.. I'm kinda curious..
Old Jul 9, 2007 | 10:19 AM
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I was hoping to spend less than I am seeing here on a wideband 02, is there one that you can just plug into your laptop with no other hardware? I was thinking this would be cheaper and I thought I had heard of some usb type connectors for wideband O2 sensors in the past.

thanks

Last edited by 96LT1TX; Jul 9, 2007 at 12:27 PM.
Old Jul 9, 2007 | 12:50 PM
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kind of hard to snap photos of the thing when I'm driving.

I ordered the hand held LM1 with the RPM accessory, just plug in, hit record. Then download using the LM software.


I love it so far. Biggest gripe is that the screen isn't backlight enough so the daylight fades out the display.

I also had an AEM UEGO wideband in my other car prior to this, worked great also. They have both the blinky lights and a digital readout of the A/F ratio which I found alot easier to use. The only reason I bought an LM1 was because I was tired of ripping out my gauge everytime a friend needed to check A/F ratio on their car.
Old Jul 9, 2007 | 01:17 PM
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I just ordered the Dynojet Wideband Commander

http://www.widebandcommander.com/

It was $429, cheapiest i found it on the net. It is alittle pricey but the software and support you get with it is great from what i hear. PLUS it has a USB uplink cable insted of the normal DB9 serial. So that means I can run datamaster and this at the same time :-) The software really sells me on it, its pretty much having ur own real dynojet wideband in your car. For the most part its the same one you use when you dyno. This is what the software interface looks like:



it comes with a nice gauge also, so if you think about it, it is a pretty good package.

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