Odd. No one has addressed interior volume. That is a great point!
How loud is it and the drone in the cabin? Where in the RPM band does the drone hit?

 

interior drone is pretty low. oddly it was worse with the stock h-pipe. it rumbles way more with this set up, though, but actually drones less. i realize that doesnt make a lot of sense, but the "bass" feeling is more pronounced now. its tough to describe...i feel like the drone has moved up the rpm band but in a really narrow channel...right before 3k...but its so narrow, its next to impossibe to hold it at that even if you wanted to...

 

that's a great sound, a sound I would love to have.

 

By the way I have Mac axlebacks and they do drone. I like drone which is rare for most but what I hear about Mac's they are the worst.

 

Hey, all get a load of this: http://www.thunderracing.com/catalog...vid=19&pcid=98
Second listing is for the Catted ProChamber, its got the correct stock number. I haven't called to verify its legitmacy. Thoughts?

 

When I just had the Borla cat backs on the drone was terrible. After I installed the LTs and the prochamber it got better. It is loud but the head ache causing drone left. No cats.

 

I doubt they have them in stock, can't tell you how many shops I called that still showed it on their website only to find out its not available.