Hoggle21

Hi there, I'm new to the site. So a big hi from here in the rainy UK. I have an fz600 s2 abs 2013 model. I'm very fortunate to be getting a full, complete exhaust system free of charge designed and fitted by delkevic exhausts here in the UK. This includes new headers all the way to the end cans. But, I am also thinking of adding a k&n air filter too. But is there anything else I need to consider re tuning to ensure the bike runs well? Cheers