It's hard to judge just how loud the active exhaust is when you are traveling the speed of sound in front of it. But today, returning from Berkeley, I went through the long Caldicott tunnel with the top down and active exhaust on. The noise was deafening. Couldn't even hear Clapton at high volume or the Harley coming up behind. Couldn't take my eyes off the road to turn it off either. My ears are still ringing like after a Who concert.

 

Excellent!

 

Yes! Yes it is!

 

I go through a rock tunnel everyday on my way to work, every morning I slow down entering the tunnel and blast through it, every morning I giggle like a fool.

 

Tunnel in Mobile Alabama--loved my R Coupe even more.

 

Love it every time i drive the cat..When you start acceleration at the entrance of the tunnel people at the end of the tunnel keep their ears shut. After this i decided only to accelerate when no one is in the tunnel. I did a noise measurement and recorded 110 db in the tunnel. with the windows down. Cannot decide how much the wind noise distorts the measurement but standings revs till 4000 rpm measured 118,6 db right behind the exhaust....it is a ridiculous loud machine....but Aventador is louder i experienced during cars & coffee .

 

Best way to do tunnels is in manual, releasing the gas when you change gears, just like in a manual.