wideband o2 sensors - who has an LC-1?

[Mokesta]

I installed a narrow band O2 sensor and the Jaycar digital AFR read out kit into one of my cars. It doesn't have a cat and when I put it on the dyno the operator put the wideband sniffer up the tail pipe. The results were a VERY poor correlation between the narrow band sensor and wideband sensor anywhere outside of the 13.5 to 15.5 range. If you are tuning for stociometric AFR then narrow band may do the job but if you are chasing a ratio in the 12s the combination I have would be no good.

M

[Fatty]

mokesta, the whole point of this thread (if you read the original posters question), and my response, was for a "mild NA tune".
MILD. yes , of course a wideband will give a better result when you are trying to wring every last ounce of power out of the tune. but for anything in or around stoich, the narrowband works pretty OK most of the time. i'm just sick of people dismissing a narrowband band gauge as totally useless (as has been stated at least 4 times by different people on this forum recently). it served me very well (and saved me plenty of $$$ on a dyno tune) when i had big injectors on my car, waiting for a turbo install. once the turbo was installed, the car went on to the dyno for a PROPER tune. but i drove the car for months on my own narrowband tune. power and fuel economy was as good as stock.

[Mokesta]

And as I said "if you are tuning for stochiometric then narrow band may do the job". If you want to be hyper sensitive and read this as "narrow band is total sh*t and only a fool would use one" then go ahead but it isn't what I wrote. I think you'll find we actually agree.

My point was simply that if someone wanted accelerator enrichment (pump plunger effect) to an accurate level then they shouldn't rely on the numbers off a digital Jaycar guage and narrow band sensor.

You can get all sorts of good results from innacurate tuning techniques. Spark plug colour, screwdriver knock sensor, bum dyno, exhaust smell. For many year that was the only technique available and very good results were achieved. You have a modern method to get a good base tune using an imprecise sensor. Good for you and you have helped people save $ and their engines by publishing it.

M

[Fatty]

FIGHT FIGHT FIGHT!!!!



LOL yeah but others HAVE said "narrow band is total sh*t and only a fool would use one" or word to that effect.... i guess that's why i'm so "hyper sensitive" about it.