Ever since I purchased my 2007 V8V 2 months ago I've been looking to add some noise to the car. I ran the car for a while with fuse 22 removed & it sounded nice, but I just wished I had a little more volume & maybe some performance gain with the high flow cats.

Purchased an used Capristo valved exhuast & brand new Larini sports cats. Finally got them installed.

With the valves closed the volume level is nice and quiet. Just like OEM with fuse 22 removed. With the valves open, it is extremely loud. Like very very loud. The cold start is actually quite perfect for me, but when I get on the throttle with the valves open. It feels like the whole world is shaking inside the cabin. Feels the same with the windows up or down. I do enjoy the power gain & the Capristo tone though.

Not sure what to do next. I guess I can drive around with the valves closed 95% of the time. The transition from closed to open is not smooth, the difference in volume is huge. With the valves open, it is little too much to handle, or maybe I just need to get used to it. Video below:

 

I have VAP straight pipes... sounds is glorious. I was at the Mercedes dealer last week and several sales guys came out to see what was making the wonderful sounds...

 

Good god, that's brilliant. I now know what kind of exhaust I'd like to get down the road. Right now, just running a stock setup with Fuse 22 removed.

 

Okay, I agree that's probably too loud for day to day driving, but it sure sounds great in the video! I had to watch it twice

 

For me the VAP Super Sport exhaust and secondary cat delete on my DB9 is about perfect. Fairly quiet at 75mph and can be driven fairly quiet. However under load and full throttle its loud, but still bearable. Going with the 200 cell cats or a delete will increase the noise significantly. So in the above video the exhaust without the 200 cell's could or possibly may not be bad. It does sound glorious.

 

Same as SheriffDep, VAP cat deletes and super sport muffler in my 2011 V8V. Sounds incredible, still quiet enough under 2,500 rpm. And pretty mild unless you put your foot down, then its fantastic! The super sport has a built in x pipe for a more exotic sound.

 

Update: after 250 miles it seems like the cats are more broken in now. The tone has changed a bit. It feels more higher pitch now. See video below. I have decided to keep this set up because driving around town with valves closed is perfect. Although I still think it's too loud when the valves are open, I only use it about 1% of the time.

 

Sounds good!!

 

Random question - are you in CA and does your license plate start with 8G?

 

sounds good. With the valves open it does sound a little too loud
By the way, what rims are on the car? Those aren't factory are they?

 

Yep valves open is very loud. I only drive around with valves closed now.

Wheels are Forgestar CF10's, 19x9 +38 front 19x11 +53 rear, textured gunmetal color.