Depends on power level. You can pretty easily start to out flow a stock un-silenced air cleaner. Stock they have about 3/4” gap at the bottom multiply that by the circumference of the air cleaner and it doesn’t add up to much. I think a stock 340 diameter is 12”? 12”x3/4”=a whopping 9 square inches!! Open 3” tall air cleaner. 3”x12”=36 inches...
