My 2000 gsr with 36,000 miles is about 3 weeks old now (since i bought it) when i do ANY hard driving(i mean anything over 5 seconds of 3/4 throttle) my exhaust stinks.

does this mean that the previous owner never hot-rodded and I am now "breaking the cat in"

i searched a previous thread that said i might be running lean and to check spark plugs, but this is a STOCK gsr in perfect condition that gets good gas milage. if there is something wrong with the motor it is not obvious.

thanks in advance