muffler mod to carb adjust

I'm planning on drilling some holes in my muffler end cap to get little more power. My question is do I need to adjust carb any way to make this work. Its an 80cc 2stroke. Not sure of brand as I bought it used. Thanks.
 
probably not, as all the stock jets are way rich anyway. just be sure it doesn't lean out
 
ha! I'll be surprised if it makes any difference at all other than making it too loud
 
Actually it did. Have a little more low end power and hellofa lot more in the high end. Again thanks for the tip guys.
 
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