As I posted about in the thread linked below I have an advance 4" dump and cat which is stainless steel. The exhaust has a metallic buzz/ringing from the metal itself, eg when you use more than 25% throttle it seems to buzz and vibrate from the engine bay/under neath the car, the stock exhaust did not do this.

've heard after 6 months it will get better however after almost 3 months it still buzzes just as much as day one. I'm fairly sure this is due to the thin wall thickness of the stainless steel, so the question is, does anyone make a 4" dump and cat in mild steel that doesn't buzz?

The X-Force website isn't very clear and I can't tell if it is only the muffler sections that come in mild steel. I've sent them an email but does anyone have a 4" dump that sounds the same as the stock one, eg no buzz or ringing?

The stock exhaust with no middle muffler sounded awesome. I've put the stock muffler back in however it still sounds more raspy than it did standard with the advance dump which I don't really like.

Suggestions?

http://www.fordxr6turbo.com/forum/topic/89478-what-middle-muffler-for-bf-xr6-t/

Have you checked where the mount is welded to the dump ?, they can pull away causing a hole in the dump pipe.

I have an advance dump on my fg and I don't get any of the noise you're talking about .

I'm going to pull all of the heatshields off today and see if it is that or a loose nut somewhere.

I will buy the 4 inch dump and cat of you ,how much do you want for it

Remember its double demerit points, dont answer that dump while you are driving. And if you do wear gloves ,it WILL be hot.

Lol no double demerits in SA

Just found out the advance dump is 1.6mm stainless and the xforce one is 1.2mm in mild steel.

Going to pull the heat shield off and see if that is the cause of the vibration.

Any updates?

Not the shield, seems to be coming from the cat assembly, I'm going to check if one of the gaskets is leaking when I have time.

my dump had the mount pull out.. left with a hole about 25mm long, 13mm wide. Tig welded it back in, then put a plate over it to give it a bigger footprint. see how it goes...

what brand of dump Chaos310?