Arrow Exhaust / PC V Installed

[mjezek_imp]

I installed a Yoshimure RS3 slipon on my 2014 standard. No need for a PC V unless I'm changing out the head pipe without a cat and changing to a K&N or more free flowing air filter. The stock ecu is more than capable for compensating the air fuel ratio on today's fuel injected bikes with just a slip on installed.

I am sorry, but i do have a question to your statement .... how does the stock ECU know that there is aftermarket slip on installed, especially, if the O2 sensor is before the cat ... ? Or in other words, an after market slip on is good for sound and weight saving, but unless you change the fuel mapping, nothing will change the HP/Torque output.
Not sure if our detuned 1100 motor really cares about having less "back pressure from the exhaust " .... when there is still the cat between ....