Many of us like the price and sound of the axle back exhausts out there but a lot of us complain of the drone or loudness of the exhaust inside the vehicle. Has anyone modified a set of these and installed a Helmholtz can on the side like Ark and Topspeed have done? Just a thought that it might improve the sound on the inside without affecting the outside sound.

 

Bump . . . interested in the same idea.

 

Same here someone be the test mule

 

This is probably the most useful information I've been able to find, but it's anything but straight forward:

Fancy Tech: How to Get Rid of Exhaust Drone, works great! - Nissan 370Z Forum

http://www.kcsr.org/showthread.php?t=131893

http://hardtuned.net/forums/index.php?showtopic=531067

 

pretty happy with my Beluga axleback - its just the right amount of extra volume without being annoying (and it was cheap!)
nice and deep sounding, not the Chewbacca bark i was expecting from the typical Z/G37 exhaust.

 

Placed the order for another set of TopSpeed axlebacks.... should be in stock in a week or two. Will update then

 

Who did you order through? Topspeed website is out of stock?