I have Invidia Gemini Exhaust on my 05 FX35 and there is drone between 2k-3k rpm, which our cars RPM falls under this range from normal driving.
You might think it's a bit loud but I personally like it so it's not a problem to me.
On the highway, it's pretty quiet like stock exhaust.
That sounds pretty good on your ride George.. I thought this wasn't available for the 50?
Btw, we need a WOT video... I wanna hear that v8 scream...:eek.: