No Worries said:If you have a 1986 GSXR 750, it may add horsepower. The only test I ever saw was for a late-model CBR 600. The K&N lost several HP, but if you don't go over 10K RPM, you may not notice. The best thing about the K&N is it lasts forever, after washing and oiling. If you're like me and squeeze every last drop out of a bike (my three bikes average over 23 years old) get the K&N. Otherwise get the stock filter.
Thank god a smart one.14funs750 said:When a shop DYNO's their bikes, at most they have a fan in front of there bike. How can they possibly tell how much HP your bike is picking up at 100 +++ MPH. The more air that is getting through the filter the more HP. So maybe on a DYNO in a small speed shop there is little, no HP OR - HP but in the real world you are picking up ponies. :dthumb: