Exhaust has developed an odd noise

[Nothing]

So I just got my car back after having catless downpipes installed. The whole system is an Active Autowerke's exhaust. The shop took the whole exhaust off the car while doing the downpipes and my first thought about this noise is that a joint came loose. If you've seen the AA exhaust it's really crazy with the nuts and clamps.

Because I have the catless downpipes I hear things I never heard before and need some insight from guys who know what things should and shouldn't sound like.

Here's the clip and it's the tinny rattle you hear coming off throttle that I'm concerned with.

[Tommy L Garage]

It’s an exhaust leak. Take it to the shop and have them do it right. Ale sure they replace the one-time-use-only gaskets

Check out this video

[Nothing]

Originally Posted by Tommy L Garage

It's an exhaust leak. Take it to the shop and have them do it right. Ale sure they replace the one-time-use-only gaskets.

Hey Tommy. Funny enough I watched your issue with the leak at the dowpipes while they had the car. I didn't realize I needed those gaskets and flanges where the midpipe and dp's meet but the shop did and grabbed new ones from BMW. I got way over charged by the dealer something like $40 per gasket.

I have a clip where I recorded the dp area and that section isn't moving that I can tell.

I know I can take it back to have it looked at but it's a lot of hassle if I can reposition a clamp on my own and be done in less time than driving it over there.

[Tommy L Garage]

Originally Posted by Nothing

Hey Tommy. Funny enough I watched your issue with the leak at the dowpipes while they had the car. I didn't realize I needed those gaskets and flanges where the midpipe and dp's meet but the shop did and grabbed new ones from BMW. I got way over charged by the dealer something like $40 per gasket.

I have a clip where I recorded the dp area and that section isn't moving that I can tell.

I know I can take it back to have it looked at but it's a lot of hassle if I can reposition a clamp on my own and be done in less time than driving it over there.

In that case it's very easy to reposition the clamps
Those clamps are actually very poorly designed.
In my video when I out everything back together I also had a leak at the rear clamps. After repositioning them I'm good to go.

Oh and be sure not to get under the car with just s jack. Use some backup

[tauzins]

Originally Posted by Nothing

So I just got my car back after having catless downpipes installed. The whole system is an Active Autowerke's exhaust. The shop took the whole exhaust off the car while doing the downpipes and my first thought about this noise is that a joint came loose. If you've seen the AA exhaust it's really crazy with the nuts and clamps.

Because I have the catless downpipes I hear things I never heard before and need some insight from guys who know what things should and shouldn't sound like.

Here's the clip and it's the tinny rattle you hear coming off throttle that I'm concerned with.

Did you ever fix this? I have the same problem

[Nothing]

Originally Posted by tauzins

Did you ever fix this? I have the same problem

Insisted this needed to be looked at and the shop found that the exhaust had settled differently and the sound was from that. There is also a sound at start up that happens when the car opens the waste gates at start up. I push the start/stop button 1 second before I actually start the car and it prevents the rattle at start up.