I am looking for an exhaust system for my zx-10 and would like to know your guys' opinion on them. What are your experiences with the different systems( specifically ti-force, akrapovich, yoshimura, muzzy, arata, any others...)? Have you had any problems with it? Which system weighs the least? Adds the most HP? Any feedback is appreciated! PS, has anyone made a turbo kit for the 10r yet?