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Old January 4th, 2010, 09:10 AM   #1
rostigbug
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Default wideband air/fuel sensor

I think I know how to jet a carb BUT I am thinking about buying a air/fuel meter
I read a book about how to do it with the cheap garden variety universal oxy sensors and a multimeter but I heard they are very very narrow band & are only usefull if your jetting is realy close before you start.
Anybody here know anything about the wideband meters???
They are expensive & I need to know if they are a waste of money.
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Old January 4th, 2010, 03:21 PM   #2
Flyin
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Default Re: wideband air/fuel sensor

The narrowband ones are useless for tuning. Basically they only tell you if you're rich or lean, not by how much. I've got an Innovate LC-1 for my 2.3l turbo Mustang that I haven't installed yet. I've heard that they can be a little touchy with the wiring.

I mostly see them used with EFI/turbo/supercharged engines. Personally, on a carb'd engine, I think its overkill. I mean you can't tune every RPM/manifold pressure to get the exact AFR you want like with EFI & people have been tuning carbs really good with only a butt dyno & some common since for many many years.

I'd say if you're carb'd &/or not running an all out race engine spend the $$ somewhere else.

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Old January 4th, 2010, 07:55 PM   #3
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Default Re: wideband air/fuel sensor

at least I didn't get a bunny with a pancake on it's head
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Old January 4th, 2010, 08:52 PM   #4
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Default Re: wideband air/fuel sensor

for what its worth, a simple O2 sensor with gauge will work well. It helps with temp change, altitude difference, and the like. things that should be taken into consideration when tuning. with a carb, when the air changes so should your tune.
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Old January 5th, 2010, 05:53 AM   #5
38Chevy454
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Default Re: wideband air/fuel sensor

Most times your feel of the pants settings will be rich vs what the sensor will say you could be. Too lean is real obvious, but slightly rich does not seem to hurt much.

I have heard the wideband sensors are very useful, have not used one myself. They are expensive because of the sensor, not the rest of the parts.
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