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Old 08-07-2008, 01:30 AM
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Wide band or narrow band A/F...?

I'm planning to buy an O2 sensor with air/fuel ratio gauge for my carburated motor to help me dial in the carburetor.

Do I need a wide band kit for this? What will the wide band kit give me that the narrow band won't?

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Last edited by staleg; 08-07-2008 at 01:43 AM. Reason: Posted the same before, Sorry.
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Old 08-07-2008, 04:49 AM
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I don't think you'll need a wide band sensor to set up a carb. You should have all the info you'll need with the standard O2 sensor. A wide band sensor is more of a necessity when you're dealing with fine tuning emissions on a modern, fuel injected, heavily pollution controlled (for lack of a better term) vehicles. BTW, strictly speaking, an O2 sensor and an A/F (air fuel ratio) sensor are two different things. They're kissing cousins, but A/F sensors do work a little differently and cost a lot more money
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Old 08-07-2008, 07:02 AM
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look at the narrow band sensor and wide band sensor charts on the right on this article....

http://www.fordmuscle.com/archives/2...tout/index.php

the "wide band" sensor name is a abbreviation/slang for:wide range scale of accurate A/F ratio value readings....

which you need for tuning WOT on a hot rod
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Old 08-07-2008, 07:30 AM
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I have used a both narrow and wideband to tune turbocharged efi motors. The one I used the narrow band on I retuned with the wideband after I got it. Neither is needed to tune a carb, but if you want a tool to easily know where your ratio is, I wouldn't even bother with the narrow band. I'd go wide band all the way. The good old fashioned way is at least $300 cheaper though. Start fat and keep leaning it out until it slows down. Keep an eye on the plugs.

Kevin
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Old 08-07-2008, 02:21 PM
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Check out this website:
http://www.innovatemotorsports.com/

I have the wide-band LM-1 meter, as do others that post here. Plenty of info on the website...

Steve
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Old 08-08-2008, 12:28 AM
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Thanks for the inputs all of you!
I totaly agree that he old fashion way that KA_67_/2 mention is app 300$ cheaper, but I'm relatively new to all this, so I figured an air/fuel gague will be of good help for me the day I start to dial in the QFT 650 DP carb.
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Old 08-12-2008, 02:10 PM
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I started using an LM1 recently and cannot imagine tuning a carb without it anymore. Plug reading and timed runs are a waste of time that you will not have to do anymore once you have one...

They're also great to test and diagnose all kinds of carb problems. For example, I was able to diagnose sticking primary rods on my buddies Q-jet, just by driving around with his car while watching the readout.
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