right i'm running a itg foam airfiter, would this be the best one or would fitting a pipercross or a k& n custom be better? or am i better off modding the engine cover to let a bit more cold air in?
The airflow on the engine cover isn't so much a case of letting cool air in as getting hot air out! The trick is to remove the inner slats except directly over the engine to avoid the ignition system getting soaked in a downpour and the plug wells filling up.