Frame Rates and Sound Update

I dont know about you peeps but after installing the 1.1 sound pack from ian and marko the smoothness and fps of each circuit has somewhat improved???????
I know this is a good thing and was wondering if any other petrol heads have noticed this?
I wonder if the original sound files maybe added to the PO?
Anyway, im not complaining just enjoying even better racing

System Specs
Athlon 1800
Winxp Pro
Geforce 4 TI4200
44.03 Drivers
Soltek Mobo
512 Ram