EXACTLY how useless is a narrow band with a a/f gauge
04-03-2005, 01:28 AM
#1
1.0 BAR
Thread Starter
Join Date: Aug 2003
Posts: 230
EXACTLY how useless is a narrow band with a a/f gauge
i know a/r gauge are ---- on narrowbands, but how ----?.. do they give an APPROXIMATE reading or what? im basically wanting to get a approx reading for my 4agte with extra injectors at 18psi and have a a/f gauge
04-03-2005, 01:36 AM
#2
3.0 BAR
Join Date: Apr 2003
Posts: 2,260
Re: EXACTLY how useless is a narrow band with a a/f gauge
Very.
It only measures 14.2:1 - 15.2:1.. it's a non-linear voltage scale. Your turbo shoul dbe running generally a 12.1:1 -12.3:1 AFR... again, narrowband is very useless.
It only measures 14.2:1 - 15.2:1.. it's a non-linear voltage scale. Your turbo shoul dbe running generally a 12.1:1 -12.3:1 AFR... again, narrowband is very useless.
04-03-2005, 01:38 AM
#3
0.5 BAR
Join Date: Jul 2004
Posts: 153
Re: EXACTLY how useless is a narrow band with a a/f gauge
http://www.zeitronix.com/questions/O2questions.htm
The narrow band does what its designed to do; read afrs and tell you if its lean stoick or rich and thats about it. It doesnt have the linear resolution of a wide band to tell you how lean or how rich the mixture is. So, WB is the only way to go and a narrow band is just a light show.
The narrow band does what its designed to do; read afrs and tell you if its lean stoick or rich and thats about it. It doesnt have the linear resolution of a wide band to tell you how lean or how rich the mixture is. So, WB is the only way to go and a narrow band is just a light show.
04-03-2005, 01:48 PM
#4
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Join Date: Apr 2004
Posts: 9,800
Re: EXACTLY how useless is a narrow band with a a/f gauge
as useless as kain.
04-03-2005, 02:02 PM
#5
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Join Date: Mar 2003
Posts: 21,479
Re: EXACTLY how useless is a narrow band with a a/f gauge
Originally Posted by ****
as useless as kain.
If you're running 18psi and trying to tune with a narrowband, you should kick yourself in the *****.
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04-03-2005, 03:25 PM
#6
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Join Date: Apr 2004
Posts: 0
Re: EXACTLY how useless is a narrow band with a a/f gauge
You could say the narrowband sensor is about 10% accurate, so there would be a 90% probability that you'll blow your motor up.
The ONLY downside to getting a wideband is your friends calling every other day asking to borrow it.
The ONLY downside to getting a wideband is your friends calling every other day asking to borrow it.
04-04-2005, 01:17 AM
#7
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Join Date: Apr 2003
Posts: 2,260
Re: EXACTLY how useless is a narrow band with a a/f gauge
Originally Posted by SloS13
The ONLY downside to getting a wideband is your friends calling every other day asking to borrow it.
04-04-2005, 04:14 AM
#8
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Join Date: Aug 2003
Posts: 230
Re: EXACTLY how useless is a narrow band with a a/f gauge
well atm the injectors 2 x 265cc are at about 60% duty cycle. the stock ecu fuels it fine for 12psi, then *apparently* starts going lean, so with the timing wound bak abit + extra fuel and 18psi it blows abit of black smoke on WOT so hoping its all good..
dont care how rich it runs, as im selling the peice but as long as its got to much fuel then its all good ..
if the car is beginning to go lean, would the a/f gauge on WOT still stay rich or ?
dont care how rich it runs, as im selling the peice but as long as its got to much fuel then its all good ..
if the car is beginning to go lean, would the a/f gauge on WOT still stay rich or ?
04-04-2005, 08:43 AM
#9
0.5 BAR
Join Date: Dec 2004
Posts: 71
Re: EXACTLY how useless is a narrow band with a a/f gauge
A narrowband might tell you "rich" if your afr is 14:1. It would probably say the same thing at 9:1. They really aren't terribly useful.
04-04-2005, 01:57 PM
#10
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Join Date: Apr 2003
Posts: 2,260
Re: EXACTLY how useless is a narrow band with a a/f gauge
Originally Posted by -SphiNx-
if the car is beginning to go lean, would the a/f gauge on WOT still stay rich or ?
