Just purchased my Two Brothers exhaust on ebay today! $245 + $22 shipping. BTW Scuzz, don't worry about the vid anymore, I saw this deal and couldn't pass it up. My next purchase is a PCIII. I'm still a college student working part-time, so I don't have the funds quite yet to purchase the PCIII. Should I leave the exhaust off until I get the PCIII? I don't want the quad to run too lean or rich and be bad for it.