Ive got an 09 900 custom, im looking at a set of v&h twin slash staggered chrome pipes for it and a k&n filter for it but I don't know what to do as far as a power pack. I saw 2 different models from Cobra and one from V&H and a local dealer said they use dyno jet. whats everybody running and how do they like it? I see a lot about the corba fi2000r and power pro... I think im leaning cobra way. thanks in advance for the help.