For you experts, if I put the tail pipe finisher accessory on my 2011 XJL Supersport, will it change the exhaust note at all, or is it purely cosmetic? She needs a quad exhaust, but I don't want to ruin the sound that Ian spent so much time perfecting.

 

It's only the exhaust tip, so I doubt it has any impact on the sound.

 

Nope there wont be any change and I'll be so glad to see you replacing those Mazda CX-9 tips on your XJ =)