ExpyNole
Well-Known Member
the explorer has far less sound deadening than the expedition. Much, much less engine and road noise in the expy, so I think what you're hearing is the noise enhancement.What I heard in the ST was the minute I switched it over it got much louder no matter what is was doing. It was a clear difference.
the SPP has an enhanced exhaust note because it's a true dual exhaust, too.