Audi S8 (D4) – Exhaust Cutouts: Comprehensive Review and Sound Comparisons

This is a comprehensive review of exhaust cutouts on my 2014 Audi S8, which I installed 2/5/20. LOVE THEM!

Cutout Hardware Installed: (both from Summit, but shop around)
– Granatelli Motorsports part #307525K (https://www.summitracing.com/parts/grn-307525k)
– Granatelli Motorsports part #303510RD (https://www.summitracing.com/parts/GRN-303510R-D)

Details of the Video:
I created this detailed video because, as I was researching my exhaust options, there wasn’t much information that was relevant to my particular model car (or newer generation Audi 4.0s, in general). I wanted to do more than throw up some random sound clips; I wanted to include information that would have been helpful to me as I was researching exhaust options.

The general layout of the video is as such:
– Overview/details of cutout installation and installation of remote-control module.
– Standardized sound clips at 25%, 50%, and 100% throttle with the cutouts both open and closed.
– Sound clips from bumper, interior, and drive-bys… to give you the complete picture of what these bad boys sound like.
For best sound accuracy, wear headphones/earbuds

Here are a few more relevant details of my car:
– 2014 Audi S8, APR Stage 1
– All 2.5″ exhaust piping
– Baby resonators and suitcase replaced with custom x-pipe
– Valved mufflers are unplugged, which keeps the valves open (so, “closed” in the videos represents the loudest, most raucous the stock mufflers can sound)

ENJOY!

Bookmarks for the Video (click to skip to specific points):
– Start-Ups: 9:15
– Bumper Clips: 10:40
– Interior Clips: 14:18
– Drive-By Clips: 22:58