The 2 we have, one has all stock set-up & the other has Tyga (cut-off back) lid and Daytona filter. 2nd is much noiser (sounds cool) and a just little flat at very bottom, mid & peak power is great. The 1st is very streetable & smooth everywere. I had heard on a thread that K&N pods were not a good option, something about rough air flow. I had a set but never ran them. I had no filter with stock box when I first got my bike, maybe good for track, but roads are to dirty to no run anything.
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