[amullo]

1) my bike has a full arrow exhaust system.. with this how does one adjust the air-fuel ratio with the stock ECU.

There is a screw on which to adjust it. I´m really not sure which one, but your dealer can help yopu with it. You´ll need a CO-level meter anyway..

2) is it complusory to have either a performance chip/ PCIII once a full system has been installed?

If you want all the benefits of your full exhaust, then Yes. Going with a chip or PC is a matter of taste, but i have both a DP-chip and a PCIIIusb
If i where to buy a chip or PC today, I´d go with a PCIIIusb only.

3) where would a performance chip be located? still figuring out whether mine comes with a chip...

The chip is located in the bike´s ECU. The ECU is under/behind your seat.
There is a sticker or ductape over a rubber cover on the ECU.

//amullo

 

[ctk333]

thank! gonna check them out real soon!