I'm currently running an R with co upped by 10, air box drilled, snorkel removed, stage 1 and 2 filters, kev fuel mod and a set of mtc cans. I think theres a lot more pull in it from lower in the rev range right through to the limiter, it picks the front wheel up on throttle alone in 1st and second and even in third sometimes if you get it right on a hump. Its also smoother now with these mods.
The biggest power gain came from the stage 1 and 2 filters together, thats your best hp for � improvement as this is where these bikes are most restricted.
The cans didnt make much difference to power, they just make a sweet sound!!

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I'm always in the sh1t, only the depth varies