A man I ran into today suggested I place a wide-band sensor into my exhaust system for tuning. A note: I ride a '96 F3, which is carbureted.

I wonder if this could be done? What would you do, tune the idle for stoich, or tune it a touch on the rich side?

Perhaps, with a carbureted bike, this isn't a particularly a good idea. What are your thoughts? I guess it might make running a jet-swapping operation on the dyno more of a results-based effort.

 

The point of tuning is to set an air/fuel ratio. Using a wide band O2 sensor tells you exactly what ratio the a/f mix is at the time, allowing you to tune the motor correctly. There is zero way this is a bad thing. At constant throttle you want stoich, when accelerating you go for slightly rich.

 

i made one of these for my f3. DIY Air / Fuel Ratio Meter
as stated you can get most of the chips for free. its not super difficult to make(assuming you know how to solder), just time consuming
I think i spent around $40 doing this, half of that was having a shop weld in an o2 sensor bung into the midpipe. Just make sure you get an o2 sensor with the correct ranges. also, try to get the LED bar they used, i had some leds lying around that i used and they can be hard to see at times.

 

Love this idea. Sjona2011, do you leave the sensor inatalled all the time or did you remove it and plug the bung after you finished tuning?

 

i just use it for tuning, because i dont feel like hiding the wires and the meter looks horrid, and the shop i took my midpipe to welded the bung in the wrong spot, so the o2 sensor sits about 10mm from my rear tire.