ARE ANY OF THESE WORTH IT ?

[Howie]

Pepe??

The probe in the can outlet will work.  The plugs work better for cylinder balance.

[DarkMonster620]

Pepe??

The probe in the can outlet will work.  The plugs work better for cylinder balance.

OK ...

yesh, he now calls himshelf Pepe ... I fink isch a ... pasching fing

[Roaduser]

sometimes when it comes to AFR guages, green is rich which is ok but not best. reason being green rich wont blow things up, red lean will. So Yellow is prob what you want. example below, note: some meters will have green in the stoich region and yellow in rich.


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[DarkMonster620]

sometimes when it comes to AFR guages, green is rich which is ok but not best. reason being green rich wont blow things up, red lean will. So Yellow is prob what you want. example below, note: some meters will have green in the stoich region and yellow in rich.


Uploaded with ImageShack.us

Thanks for info .. how does one use this gauge?

[Roaduser]

what guage do u have? as they can vary but the basic idea of a simple gauge like above is to be in the stoic region. if its digital about 13.5:1 to 14.5:1 is going to be a good safe reading for the street but it depends what your trying to do. are you remapping it yourself or just being cautious and checking on your tune? is it a street bike or track?

i have seen spikes as lean as 17:1 and as rich as 10:1 on my car under certain bad circumstances and it has survived but you dont want to let it keep doing those kinda numbers on any regular basis. im not sure on what the ducatis do, but my limited experience shows you may run a little rich at idle, say 12-13, and then lean out to maybe a 15 at the top. but i wouldnt wanna see any more than the rare low 15 up top as that is a bit too lean for a road bike that is at the perils drinking dodgy fuel on occasions.

[Roaduser]

as for position of your wideband probe. i imagine the can outlet should be fine for a bike as your exhaust isnt very long and the mufflers are prob not much of a muffler/disturbance anyway.

speaking from car experience you ideally want your probe before any cat converters or mufflers and just after the last junction from the bank of cylinders your testing or all the cylinders if you can. cats and mufflers do effect readings but i cant recall exactly if they make it rich or lean but unless your trying to tune to the ragged edge it would be a minimal effect. many ppl use the exhaust outlets out of convenience opposed to welding in a bung. just keep it a little rich if your in doubt, rich is safe and plugs are cheap compared to the alternative.

so for a ducati ideally id want it just after the merge. before the mufflers, and cat if you have one, but its prob not worth putting a bung in if you dont already have one. not that their expensive, but for occasional road use it is an unnecessary effort.