If you have her wound out those sparks are going so far in the air they will be cooled by the time they hit the ground. I guess almost all will never even come close to the combine. Now if you do take it off make sure, really sure you let it idle and cool the turbo and engine since cold air can rush in easily and crack a hot turbo. By the way, our TR95 with CAT 3208 is piped and she sounds good. When original motor sent a rod through the block dealer left muffler off and we just left it that way.