Gday All, Im looking to buy a Yoshi R-77 Slipon for my CBR1000RR 2010 and was wanting to know if they come with a nut already welded onto the pipe for the O2 Sensor or do i have to install it myself?? I have already bought a cheap straight pipe but it is way to loud and even after installing a resistor into the sensor connector it still shines me a fault light on the display. it did make a difference though, the bike was not rideable without the resistor in place.. I will be buying the pipe from America seeing ill save a few hundred dollars but was hoping someone has any info on the O2 Sensor setup??