I have test pipes headers and a cat-back on my g coupe and i have a rattleing sound in the exhaust.

with the test pipes not headers

and i also have another video with just the cat-back and there still seems to be a little rattle even though you cant hear it as much.

Let me know what you think.

 

That's the natural sound of the VQ. You're going to have to learn to live with it. For years, people have been mistaking this sound for loose or broken exhaust components. The reality is it's the sound of the VQ when you've removed a majority of the sound deadening exhaust components.

 

Is this true for most people though? Mine has a pretty nasty rattle
only right after I let off the gas, when the rpm's are coming down.
Ive heard many Gs on here with the same type of exhaust setup
that dont have any rattles which worries me....

BTW I have the HKS replica with resonated test pipes..

 

Correct. It's a known thing. My friend has the same rattle with his test pipes.

 

Look to see if your exhaust is slightly touching your rear sway bar.

 

yea your good mine does the same thing

 

Thats normal. Nothing is loose. Just the rasp of the VQ when you really have a free flowing exhaust.