I just ordered a new RPW Big slash 2 into 1 in black. I'm excited to get it. I will eventually order the VFC III , and an air filter. I may try and run just the pipe with the o2 sensors disconnected, and see how it runs. I know there are quite a few doing this with the Cross bikes with good success. Now, as for the install, is it really tough ? Or is it something me and a friend can handle ? I installed the thunderheader on my Harley by myself...