I'm sure we've all seen those fans on TV that you hook up to the intake hose or wherever it is and they supposedly produce up to 35 more HP and better gas mileage. There are like $60. Has anyone purchased one here and if so did it really make a difference in the performance? I have a 2003 Tiburon GT V6 which is pretty quick as it is but wouldn't mind getting a few more Horse out of it and the $2,700 Alpine Supercharger kit seems a bit steep.