He is correct about turnign the pump up, or, those lighted signs, by the road, that say expect delays blah blah blah. They use the same yanmar engine in there taht is on your tractor. The lighted signs are turbo charged, they just turn a generator. Maybe at your local yard you can find one that has been hit, and scavenge the turbo intake and exhaust, if you have enough room in your lawnmower for a turbo.