I tried to fine tune the idling of my bike by lowering the AFR % at 0% throttle.

I realized that, when idling, the tuner saw my bike as 100% throttle. If i adjusted the 100% range values, i could see the AFR being changed. Also, it switched from 100% throttle to 10% all the time, always when iddling. The bike was warmed up at the time.

I tried to set the idling value to -15% fuel. Which means the idling was switching from the AFR value of the 100% throttle to the AFR of 10% i.e.-15% to 0% to -15% to 0% to -15% etc...

Am i missing something? Is my tuner, or my bike going FUBAR? Is it normal to see that kind of throttle % variation? Is it normal to have to tune the idling by adjusting the 100% throttle values?

 

you will see a little dancing around at idle like this :
But you shouldnt see 100 %

Read up and try the throttle calibration in the software and check your connection to the TPS sensor.
I dont like the connectors supplied and I soldered mine to the throttle switch.
One note. On this bike you have to have it running to perform the throttle calibration (IIRC) so do the cal and rev to full throttle for a second.

 

The Throttle Position needs to read 0% at idle and 100% at full throttle, it is synced to the throttle. If it is reading 100% at idle the TPS wire is not connected properly or the Throttle Position was reset incorrectly in the software. Make sure the TPS wire is connected correctly then to set the Throttle Position use the following procedure; with your bike connected to the Micro Tuner software, ignition & run switch on (or bike running), go to Device Tools>Calibrate throttle. You will select reset and roll the throttle fully open then back closed, select OK. It should now read properly. If you need any assistance or if you get next to the the bike with the software connected you are welcome to contact us and we can walk you thru it.

 

Wow thanks a lot for the answers. Ill do the calibration and wire verification tonight when back from work.

 

Throttle calibration and wire inspection/redo didnt changed a thing. I verified that it is connected to the purple wire.

I've checked the voltage before and after and it can only reads two values; 4 volt which is the 100% throttle and 0.8 volt which is 22%. Even while trying to twist the throttle at various position, it is still switching from .8 to 4 volt.

 

Bummer... Thats really weird.
I would contact FuelMoto directly. They are great and will make it right.

 

I can see from the video the throttle position was not reset correctly. It appears that after you reset the throttle position you did not roll the throttle open/closed so its bouncing between the min/max reference voltage at the same throttle position. Try this with the engine running and make sure you hit OK before you exit. You are welcome to call our technical dept at 920-423-3309 and we would be more than happy to walk you right thru this process.

 

Thanks a lot for the support. The bike is running well now. Please dont ask what was wrong. Spare me the shame of having to explain.

 

It's for the greater good though. What if someone else has the same issue in the future? You can save them some grief/frustration/embarrassment.

No shame in learning something.

 

Connected the Gray wire to the wrong TPS plug. I've put it on the top TPS plug instead of the bottom one. Wire was black and purple, not gray and purple.