[HaloF30]

Is anyone getting like a rubbing or vibrating noise every now and then?? Just got mine installed on my 340i xdrive

[Supr3me]

Is it rasp? At certain RPMs I'll occasionally get a sound I'd describe as rasp.

[Wires]

I'd check if your mid-pipe is rubbing on the frame (that mid car brace). You just need to loosen the clamps and twist it to fix it.

[HaloF30]

Originally Posted by Sµpreme

Is it rasp? At certain RPMs I'll occasionally get a sound I'd describe as rasp.

yeah kinda like that but it’s when I’m either idling or like have it in sport it’ll start to vibrate or whatever

[Supr3me]

Originally Posted by HaloF30

yeah kinda like that but it’s when I’m either idling or like have it in sport it’ll start to vibrate or whatever

OK you've got something different going on. I'd go with @Wires advice.

[HaloF30]

Originally Posted by Sµpreme

OK you've got something different going on. I'd go with @Wires advice.

lol probably but I’ll try recording it when it happens to compare

[Mkswoosh]

If it’s a rattle. Midpipe must of moved while you installed the dp. Midpipe will occasionally vibrate on the brace. Or the clamps not tighten from midpipe to dp or dp to turbo. But you would experience other things

[mike@x-ph.com]

Double check install

[HaloF30]

I got a video of it in idle https://streamable.com/ezcq8

[RoIIouT]

Originally Posted by HaloF30

I got a video of it in idle https://streamable.com/ezcq8

does it only do it while driving. Can you get out and hear it when idling?

[neonnblack]

Sounds like the start of the death rattle.

[neonnblack]

Originally Posted by neonnblack

Sounds like the start of the death rattle.

When you hit the gas does it almost start to 'scream/ screech'?

[HaloF30]

Originally Posted by RoIIouT

does it only do it while driving. Can you get out and hear it when idling?

yeah I can but it comes an goes.. more prominent when it hots already

[HaloF30]

Originally Posted by neonnblack

When you hit the gas does it almost start to 'scream/ screech'?

death rattle?? its like 50/50 sometimes ill get really nice turbo sound and then other times it like rattles as is step on it but once in park the sound just stops

[neonnblack]

Check out this thread and the video in it. It seems that occasionally after messing with the exhaust this clip breaks for whatever reason. It's happened to a handful of people, me included. Mine sounded similar to yours in the beginning then turned into the video in the link.

https://f30.bimmerpost.com/forums/sh...php?p=25253374

[BMWiltshire]

Originally Posted by HaloF30

Is anyone getting like a rubbing or vibrating noise every now and then?? Just got mine installed on my 340i xdrive

As someone else said, it's almost certainly the exhaust rattling like crazy against the mid-brace. Exact same thing happened with mine after I had the Wagner DP installed, plus others I spoke to on the forum at the time said it was that for them too. There's a clamp halfway along the exhaust that needs doing up super tight and that fixed the problem for me.

I think we may have taken off the brace and put in some washers to lower it a little bit too but I can't remember for sure as this was a while back now.