I quite often go out for a ride with a mate from work. I ride my little ZXR250 and he has his ZX9R. Quite often as we are leaving work at the same time we go to let the bikes warm up a bit, I can hardly even tell mine is bloody running next to his. A few times mine has stalled and I can't tell till I see the oil light lit up. Riding along near him after an intersection is annoying too sometimes as you can't hear the bikes revs and have to keep checking the Tacho. Any other 250 owners notice the same thing when riding with mates on larger bikes?