I have a 2009 CBR600RR. I put a two brothers slip on and a PCV on. I want to complete my exhaust by adding headers but I am haveing trouble picking. I could just get the two brothers headers to go with my slip on but I was also considering Arrow headers. If I get the Arrows, do they make maps for the pcv that will work with a combination of a slip on from one manufacture and headers from another? What should I do? I also want to get an air filter, whats the best?

 

Either header should provide an improvement over stock. I would suggest having a custom dyno tune done to get the most out of your setup. The downloadable maps work ok, but a dyno tune will really open it up.