What will happen to the engineif you run without any baffles?

What year, what model? How long are the pipes and what size diameter? However, if you hear a pinging sound when you are at crusing speed, you are damaging your engine and need baffles. If you run without baffles, the pipes need to be a suggested 40 inchs long, so that cold air (not hot is cold) can not reach the valves.