[cmorosco]

I think what you're hearing is the 4 cylinder engine before the supercharger kicks in. 230s sounds like old tractors between 1k and 2.5k RPMs. After that the supercharger kicks in and they sound great. I kept asking the dealer about this as well. I thought it was tuned badly but after several dealers checked it and checking out other 230s I realized it's just how the engine sounds.