Noticed there was more air coming out the oil cap than I expected. I didn't expect there to be anything really. Took the oil cap off when I was out for a run at full temp, which isn't something I ever do, so no idea what it would 'usually' do. How much is normal, and what would it suggest if this is abnormal? Only engine mod I have is the mountune CAIS, so the k&n filter with the extended bit to the rocker cover.