Who told you to take out the baffles?

Are you racing in competition when any and every micron in performance could mean the difference of a win or lose. Or are you just a sport flier out having fun?

If the engine is running fine and your happy with the power then why change things.

This plane the engine is on. Will it show a 10% change in engine power?

A high wing trainer with it's draggy flat bottom airfoil will not notice if you added a .10 displacement bigger engine.

If you want to get rid of the baffles then get rid of them. In fact get rid of that entire expansion muffler and get a tuned pipe if you want to see a real increase in power.