Lumenition Air fuel ratio meter

cosy trav · 04-02-2010, 10:29 PM

Ive just bought a Lumenition Air fuel ratio meter and wondered if you can use these meters to set up the base mixture ? Its the 19 LED version .

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oldford · 05-02-2010, 06:30 AM

I doubt it. These use usually narrow-band oxygen sensors.
I use a wideband unit, something like this: http://www.plxdevices.com/wideband.html

cosy trav · 05-02-2010, 10:09 PM

The reason im asking is that when its idling its 2 yellow leds above Lambda 1 setting and goes to the 1st green light when boosting which means it running rich but not getting to the max power mark at 3 green leds so was going to turn the co screw clockwise a bit to richen it up a bit but didnt want to upset the idle co setting . Im new to all this tuning malarkey LOL .

bad boy rs · 05-02-2010, 11:12 PM

i wouldnt adjust anything using a narrow band mate

tabetha · 06-02-2010, 01:42 PM

The overall fuel graph is fixed by the chip so affecting one end of the scale will affect the other.
So long as it's a decent chip and set to the CO advised by the maker/supplier I wouldn't take any notice of what the gauge says, narrow band are very accurate but only over a very short range.
tabetha

05-02-2010, 10:09 PM	#3
cosy trav PassionFord Regular Garage is empty, add now Trader Score: (1) Join Date: Feb 2006 Location: oldham lancs Posts: 387 Rep Power: 8	The reason im asking is that when its idling its 2 yellow leds above Lambda 1 setting and goes to the 1st green light when boosting which means it running rich but not getting to the max power mark at 3 green leds so was going to turn the co screw clockwise a bit to richen it up a bit but didnt want to upset the idle co setting . Im new to all this tuning malarkey LOL . __________________ 3 DR Restoration Updated 16/5/09 . http://bbs.rsownersclub.co.uk/showthread.php?t=147865

05-02-2010, 11:12 PM	#4
bad boy rs PassionFord Post Whore!! Garage is empty, add now Trader Score: (7) Join Date: Nov 2006 Location: watFORD Posts: 4,585 Rep Power: 11	i wouldnt adjust anything using a narrow band mate __________________ 395 bhp & 410 lb/ft

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05-02-2010, 06:30 AM	#2
oldford Too many posts.. I need a life!! Garage is empty, add now Trader Score: (0) Join Date: Jan 2008 Location: Netherlands Posts: 761 Rep Power: 6	I doubt it. These use usually narrow-band oxygen sensors. I use a wideband unit, something like this: http://www.plxdevices.com/wideband.html

06-02-2010, 01:42 PM	#5
tabetha BANNED BANNED Garage is empty, add now Trader Score: (0) Join Date: Jul 2006 Location: uk Posts: 24,621 Rep Power: 0	The overall fuel graph is fixed by the chip so affecting one end of the scale will affect the other. So long as it's a decent chip and set to the CO advised by the maker/supplier I wouldn't take any notice of what the gauge says, narrow band are very accurate but only over a very short range. tabetha

06-02-2010, 01:42 PM
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