Is this the correct way to modify an air box lid ?

http://tyga-performance.com/site/product_info.php?cPath=72_79_116_117&products_id=42&osCsid=4c812f7484ab45cc4f94904c108d220b

I have heard other people mention drilling extra holes to allow more airflow. Which is better This is the only pic i have found of a modded lid.

Oh, and started the bike without the lid for the first time today. No tank either. Fark me its loud !!!! I like it. Dont think other road users will, but, its not about them.

Does the TYGA version modded air box add much more noise ?
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