Tonight I by passed my thermostat by cutting up one I had lay around. I have been meaning to do this for a while. You can't just pull it out. The oring in the thermostat housing won't make a seal without a thermostat or a washer with equivalent thickness in there. I think I saw a company making a washer just for this purpose. This should make the coolant flow a lot better. Bike will take longer to warm up. I don't ride in the winter so I don't see this to become a problem.