Hi I have the Cobras on my bike and took the baffles out, cut them in half and put the other half back. This was in January when I did this so the air was very cold. I tried them completely out and it seemed like the bike bogged. Now that it is summer time here in TX and almost 100 degrees outside, I'm thinking of taking them back out. Could I get away with this without a fuel controller? My airbox is also stock too.