Yeah, the FX35 does drone a lot. Even though a G35/7 is pretty much the same car mechanically, I find them to drone less. I think it's because the FX is heavy relative to the engine pulling it around. The drone is worst when under load in that 2-2.5K rpm range. My other car is a 335i and even though it's much louder overall than the FX - catless downpipes and full exhaust - it doesn't drone nearly as much. The FX has that drone/boominess around 2-2.5K. I wonder if the 45/50's drone as much. One member here did a full muffler delete on his 50 and it sounds decent. I can't imagine how horrible that would sound on a 35/7.