tommy***

My buddy has a f4i with O2 sensor electrical system, and I have one without.
The thing is that his bike is much smoother than mine when you tap the gas.
Not sure that it is the O2 sensor that does it, but as far as I know thats the only thing that is diffrent on our bikes.
Is there anyone who knows more about this?

mike1984

i had one on my last bike f4i. its the Cali. model and you are right. i want to do the convert this one the same way caus that shiat was SMOOOTH

tommy***

thanx for the reply. The problem with the convert is that that you have to replace the main wiring harness and the ECU +more.
I will do some testing with a powercommander, probebly tomorrow... to see if I can make it smoother with that.

The$alesman

mine has it, very smooth, also make sure theres no slack in your throttle cable lines, that helped me even more.