Hi, I was wondering if the typical Aston Martin (4.3L, 4.7L, or even 6.0L(5.9L)) joins the exhaust banks in the muffler?

A nice gentleman at Aston Martin sent me some factory diagrams and it looks like there is no crossover pipe from after cats, but I am wondering about the mufflers. There is a lot of marketing in exhaust upgrades for adding an X-pipe right after the catalytics for a few extra horsepower.

Has anyone cut open an old muffler (the smaller 2 in/2 out, or larger 2 in/2 out) and confirmed if they merge the banks there?

If they don't merge in the muffler most Astons would essentially have true duals or divorced duals. X pipes are cool, but I personally think the stock exhaust sounds almost perfect; I do like the resonator deletes, however. The sound is very textured with character, and bordering a nice high pitch from it's revving nature.

I attached some pictures below.
Thank you so much. Respectfully, V8DOHC

 

VelocityAP makes an X-pipe mid pipe. I believe Fabspeed does as well

There is no crossover in the stock system so obviously there is some power to be made by putting in an X-pipe

 

https://www.6speedonline.com/forums/...installed.html

 

That specific one is for the V12, the V8 one is usually actually the rear mid pipe replacement for the mid pipes shown above

 

Okay, so the exhaust banks don't even merge in the mufflers on the V8s or V12s?

I think some BMW V12s do not have a crossover until they get to the mufflers in the back, but it sounds like the Astons do not do this perhaps

 

No, there is no crossover. That's why my RPI exhaust on my first V8V made 13rwhp on the top end near redline bc it has an integrated X-pipe. The closer the X-pipe is to the headers the better

 

Thank you so much 007 Vantage! I really appreciate your comments and replies, they have really helped. Thanks again for your time, it means a lot to me. Respectfully, V8DOHC