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Old 01-27-2011, 11:19 AM
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Tempting new air fuel ratio afr analog gauge

I like the looks of this new wideband afr gauge.
Looks like it would be useful for tuning carb right?

http://www.summitracing.com/parts/ATM-3370/
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Old 01-27-2011, 11:43 AM
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Looks Nice, & should be very helpful, wish I had a AFR gauge myself. I have trouble reading the Black face dials tho', I always use the White face dials.
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Old 01-27-2011, 12:45 PM
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I do like white gauges.
please don't tempt me to change every gauge....cha ching.
I'll just keep telling myself I like black gauges so I can add one at a time w/o breaking the bank.
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Old 01-27-2011, 02:29 PM
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That things pretty pricey for adjusting a carb. There is a way that you can use a junk yard oxygen sensor to do the same thing and you can pick that stuff up for just about nothing. I'm not sure how you do it so maybe some one that knows how will post.
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Old 01-27-2011, 02:33 PM
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A junkyard Wideband sensor & Volt/Ohm meter?
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Old 01-27-2011, 02:37 PM
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Quote:
Originally Posted by SSedan64
A junkyard Wideband sensor & Volt/Ohm meter?
More info please! I would like to make one for my old Evo harley. So far all I have ever used is the fat lady on the back while going up hill trick. At the top you pull the clutch in and cost to the bottom. Then you pull the plugs and look at them.
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Old 01-27-2011, 02:42 PM
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I read something somewhere but, can't remember where now.
I think the Sensor & Volt/Ohm meter deal was for a Narrow band 1 or 2 wire O2 Sensor tho'. May find something searching here or Google.
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Old 01-27-2011, 03:59 PM
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Can I find a wideband sensor in junk yard?

I don't know what cars use wideband?
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Old 01-27-2011, 04:49 PM
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I'm not up on the newer EFI cars myself.
I think the newer, say 94up OBDII ECM's use the Wideband O2's, now which would be best or easiest to get to for removal I have no idea.
Maybe someone will chime in with more Info.

I need to do some Googling, may find some Tips for Homemade AFR's.
I don't think the Narrow band O2's, 1 or 2 wire types would be worth messing with. Not very accurate or enough range.
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Old 01-27-2011, 06:00 PM
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O2 sensors produce a voltage signal which can be read w/ multimeter.
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Old 01-27-2011, 11:18 PM
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Well you can try and cheapo this but consider how you are going to read a hand held VOM while you are accelerating 0-60 in the 5 sec range. Then you have to note the voltage readings and look them up on a chart to see what the AFR really is. The voltage output is not linear either.

Why not just do it right and get one of these. They have built in data logging too so you can map out a run on your lap top. It's a modern tool and you need it.
LC-1 and a DB gage You can get the same thing at Summit too.
http://www.innovatemotorsports.com/products/MTS.php

Not only that they have a nice forum with some really knowledgeable people for help.

I don't get a dime from Innovate but I do use their stuff.
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Old 01-28-2011, 12:16 AM
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The Data logging is nice.
I looked at these a while back, DIY Kits. http://www.14point7.com/

Ran across this earlier, Bunch of Gauges for sale. All types.
http://www.turbobuick.com/forums/par...re-gauges.html
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Old 01-28-2011, 09:30 AM
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Innovate Analog Air/Fuel Ratio Gauge with LC-1
Its expandable for future data logging.
I think it can be recalibrated easy.
Not sure about auto meter recalibration?
I like either for maximizing gas milege.
I'm running 3 60's vehicles; possible AFR gauge will pay for itself.
WOT tuning would be easier w/ data logged.
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Old 01-30-2011, 12:37 PM
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Quote:
Originally Posted by SSedan64
I'm not up on the newer EFI cars myself.
I think the newer, say 94up OBDII ECM's use the Wideband O2's, now which would be best or easiest to get to for removal I have no idea.
Maybe someone will chime in with more Info.

I need to do some Googling, may find some Tips for Homemade AFR's.
I don't think the Narrow band O2's, 1 or 2 wire types would be worth messing with. Not very accurate or enough range.
OBDII cars still usually have narrow band lambda sensors, they just got one before and one after the converter so the ecm can tell if you've messed with it or if the converter is failing.

You could measure the output from a NB O2 using a meter, but WB is not that easy, they need a driver circuit to operate and without it they will foul and get ruined.
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Old 01-30-2011, 12:54 PM
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Thanks SilverBack. Do you know when the 4-5 wire WB's came about?
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