narrow band a/f ratio gauge ? - Tuning Forum

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narrow band a/f ratio gauge ?
Monday, December 11, 2006 5:29 PM
I am wondering how yours responds? Mine jumps back and forth erratically at idle and in the throttle unless I am WOT or coasting anything I need to change to get a better reading because it seems like the thing is always jumping around!!

well thanks for the help

Tom




Re: narrow band a/f ratio gauge ?
Monday, December 11, 2006 5:31 PM
Yes, that is what a narrowband does. COMPLETELY USELESS! Unless of course the purpose in having it is to display some sort of erratic light show.



2010 Subaru Impreza WRX Limited
1999 Cavalier Z24 Supercharged
1999 Grand AM SE (Beater Car)
1997 GMC Sierra
2007 Honda CBR 600RR
2005 Honda TRX450R
Re: narrow band a/f ratio gauge ?
Monday, December 11, 2006 8:26 PM
All it does is show that the engine does indeed cycle rich and lean over stoich (14.7), while in closed loop operation. At WOT it will lead richer than stoich, and while coasting leaner, but not how much richer or leaner, and that's why it's useless for tuning.


15.3 @ 89.97mph, 14's on the way?
Re: narrow band a/f ratio gauge ?
Monday, December 11, 2006 8:32 PM
yep it's pretty much useless. like everyone said. it pans from side to side. get used to it.

It does nothing, it's not a wideband. it just looks kinda cool.



Re: narrow band a/f ratio gauge ?
Monday, December 11, 2006 8:43 PM
The only thing they are really good for is showing you if you are lean under WOT. That's it.









Re: narrow band a/f ratio gauge ?
Tuesday, December 12, 2006 4:49 AM
Kardain wrote:The only thing they are really good for is showing you if you are lean under WOT. That's it.


They don't even do that, unless you are leaner than 14.7, at which point you're in trouble.


15.3 @ 89.97mph, 14's on the way?
Re: narrow band a/f ratio gauge ?
Tuesday, December 12, 2006 3:58 PM
it still shows you when your geting close to 14.4, its how you had to tune in the old days, but its more for show.

Chris


'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08

Re: narrow band a/f ratio gauge ?
Tuesday, December 12, 2006 6:35 PM
a narrowband is good for filling space on your guage pod



1989 Turbo Trans Am #82, 2007 Cobalt SS G85





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