Hey I have a question though I am not new to RC Engines at all. I am just curious to what happens to a Nitro engine say the Super Tiger .40 Ringed when you dont use a Muffler at all. I have never run a Nitro Engine with out a Muffler before so I have no idea, But I do have a few assumptions. 1 Noise 2 Loss of pressure in the fuel tank. Though a Fuel pump can take care of that and I could Bear the noise or at least Dampen it some how. Again Does the piston burn up or Does nothing at all happen? Thanks Anthony.