Join Date: Mar 2011
Location: Brisbane, Australia
Just done my partial baffle mod, stopped at the 8-hole stage for now. Eight holes sounds quite different from 4. It's a good sound now; I think rather than a full debaffle I'd go for new pipes eventually, but I'm happy for a while. No perceptible loss of backpressure. It actually feels more torquey but that could just be the deeper sound fooling me into thinking the revs are lower. This was already the best-fuelled bike I've ever owned but now it's even better, there really is not a trace of snatch or lag anywhere in the range in any gear. Well done Kawasaki.
I did get a LOT of popping/backfiring when I went to 8 holes, even when easing off the throttle to change up. It was fun at first but the novelty soon wore off, so I marbled, which left just enough popping to give a bit of character.
One small tip, when you saw off the endplates, do the bottom pipe first. In every video I've seen the guy does the top pipe first, and in every video the bottom one, which is much less visible, is a neater cut. I made the same mistake...