Well, now that you asked, by removing the baffles it changes the back pressure on the exhaust system. In some cases this causes need for re-jetting the carbs to make it run a bit richer. There are a lot of riders out there that like the louder sound of the baffles either drilled or removed entirely. The exhausts are factory tuned to match the jetting of the carbs.
Keep an eye on the exhaust pipes to see if they start turning blue. If so, it is a sign of the engine starving for fuel and would be a good time to consider re-jetting. Or, if you like the color blue and purple on your exhausts you can leave the jetting alone.
Ride safely, Ed
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