under light load, you cannot hear the roushcharger. i drove an intercooled stage III from Roush for 225 miles.

when you do hit it, it has more of a buzzing sound than a high whistle. not obnoxious at all, In fact, the cheby you are leaving in the dust next to you will prolly hear more whine than you will inside the cab......

new F150- $35k
Roush stage III upgrade package $18k
friends hearing the supercharger and wife clueless........priceless.


Ramb