Possible exhaust leak

[clubracer6]

Hi, I have read quite a few posts about the noise these motors make at idle. I do feel like mine is especially loud. Rod bearings were recently done. Here is a clip after it's been sitting for about 20 minutes.

And then after a 10 minute drive.

To me is seems like maybe it is a gasket that expands more once warm.

Certainly coming more from the underside.

Any thoughts?

TIA

[jazzy1999]

Actually sounds normal to me, these engines notoriously sound like old sewing machines. And at times will give you the strange odd noises

[Richneerd]

It’s normal, it’s the beast of the engine waking up.

Don’t worry about it.

Enjoy!

[clubracer6]

Thanks, wow a bit crazy that it is that loud. In the morning it is borderline embarrassing as it sounds like a clunker. Glad it is nothing to be alarmed about but still might check it out more on a lift.

Does the BMC make this sound worse?

The previous also said the felt lined undertray was replaced by the aluminum one or something else aftermarket. He thought that might make it louder.

[SAMM3Y]

You can have cold start deleted with a tune if desired.. it'll warm up a lot slower though

[clubracer6]

Originally Posted by SAMM3Y

You can have cold start deleted with a tune if desired.. it'll warm up a lot slower though

Are tunes like that ever programmed or changed from key fob to key fob?

[SAMM3Y]

Originally Posted by clubracer6

Are tunes like that ever programmed or changed from key fob to key fob?

Not to my knowledge. A custom valved exhaust with a primary cat delete/cold start delete with a tune would what be your best bet and what I would recommend for the car and your desired capability.

[clubracer6]

Originally Posted by SAMM3Y

Not to my knowledge. A custom valved exhaust with a primary cat delete/cold start delete with a tune would what be your best bet and what I would recommend for the car and your desired capability.

Thanks and I agree it might be a good option for me.

[nrubenstein]

Originally Posted by SAMM3Y

You can have cold start deleted with a tune if desired.. it'll warm up a lot slower though

Cold start warms up the cats. I doesn't have a meaningful impact on how quickly the car warms up if you're driving it.

[SAMM3Y]

Originally Posted by nrubenstein

Cold start warms up the cats. I doesn't have a meaningful impact on how quickly the car warms up if you're driving it.

Correct but custom tunes limit max rpm which slowly increases until the car gets to temperature which on short drives often never happens.

[clubracer6]

Just a quick update on this. Turned out to be an exhaust gasket.