Ahh...I see, they change the other pulleys to speed up the Supercharger. Gotcha!

I'm not 100% sure, but I believe on american cars like the '03+ Cobra and the Lightning, don't they change the actual supercharger pulley itself?

By the way, Leading Edge looks a LOT like the logo for Edge Performance Products (who make a lot of Diesel chips/programmers/etc).

SQ