So i have had this problem getting more and more severe over the last month or two. Not sure if it is the pipe from where i had the resonators removed (weld slag loose inside, or shavings from cutting the pipe rattling around?), or if it is something else. Noise seems the loudest at the H pipe area by the flexible joint.

Basically going over slow bumps, leaving in gear and giving some throttle, or basically anything that rattles the exhaust or torques the engine makes an annoying clicking/tapping/rattling sound. My second guess would be the drive shaft making the noise, but i doubt that is it.


If the H pipe is actually making the noise at the joint, do i need to order a replacement one from online (dealer won't warranty something I already cut up), or is that something my local exhaust shop can custom make for me? It does not look like anything more than two pipes joined in either an H or an X. Not looking to tamper with the cats at all.

 

I would just buy an aftermarket h pipe. Better flow.

 

The pipe itself does not look too complicated. Would it be cheaper just to pay a shop to make me a custom one? I can't see two pipes joined together costing $300 like what i see on americanmuscle... Or is there something more to this i am not realizing?

 

zero gain.

 

How is it zero gain? Please explain

 

the car has a factory h-pipe and 2.75" piping which is way more than enough for this horsepower level and is the same piping size that's also on the 662hp GT500.

There would no power gain and hardly any sound change if any at all.

 

If it's a catless H-Pipe there will be gains. If it's catted then no you will not see any.

 

Tear into it. Check it out. Time to get dirty. Tell us what you find.

 

That's what I was kinda getting at. Cats are a huge restriction.