2nd Gen R56 Cooper S Weird sucking/grind noise 2012 cooper S

<iframe src="http://player.vimeo.com/video/54868142?badge=0" width="500" height="889" frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe> <p><a href="http://vimeo.com/54868142">Mini Cooper S strange noise</a> from <a href="http://vimeo.com/user15068681">Nicholas Maas</a> on <a href="http://vimeo.com">Vimeo</a>.</p>

I have this weird sound it only happens after the car has been sitting for a bit(like 5+ hours) and it isn't everytime it does that. I had just done an intake and intercooler muffler delete pipe before I noticed it. For one after doing these the blow off sound was much louder and I noticed it was fluttering, no telling how long it had been doing that. It didn't flutter every time but mostly when I'd rev it high. I had a forge uprated diverter valve and have since taken it off and put the stock back on which is really sucking because it's definitely caused a performance loss, doesn't hold boost the same or at least feels this way as I don't have a boost gauge. If it's the turbo bearings would it be intermittent like that or would it be a consistent noise?

Thanks for any help!

 

[ame="http://vimeo.com/54868142"]http://vimeo.com/54868142[/ame]

Hopefully that works

 

Also you can notice it goes away towards the end of the video

 

Also oil level is fine.

 

Checked my turbo turbine it's solid and spins freely, so I guess that eliminates the turbo???

 

I don't know that I hear a rattle? Not saying you don't hear one just I'm deaf, haha! The only thing that really sounds different to me since I bought it is that weird sound that I've noticed? Anybody else hear a rattle by chance? I'd guess it's possible because I'm not sure what else it could be. The rattle could be the turbo heat shield because ever since I put it back on it rattles once in a while ( I know its it because I can put a screwdriver on it and it stops immediately). Just haven't had the motivation to tear it all apart and figure out how I put it on to make it that way unless its the manifold being shaped different that is causing it. Is it possible to just get an aftermarket heatsheild and remove it entirely and maybe put a turbo wrap if the space around it would be too much after that?

I've checked:

Oil
Coolant level
Turbo Plumbing intake and pressure side
Turbo turbine (feels solid wiggle wise and keeps spinning after you spin it)
Direction of the filter in the intake I bought

I haven't checked:

Belt just doesn't seem like its on that side but will give it a peek tomorrow when the light returns

Pretty much everything else hahaha (because I have no other clue where to check besides internals and if it is I'd have to be headed into the Mini dealer because it's under warranty and I haven't been doggin it that hard but have meesed with the turbo technically and want to make sure I'm not the one who pooched it ya know what I mean?

Thanks so much for responding Nathan and anyone else who might step up to the plate. I appreciate it dudes!

 

Hmm, you guys super sure before I make an appointment? Maybe I should make another video where I'm not moving around so much trying to catch the other sound, haha. That really sucks.

 

I made an appointment for next wed, hopefully its nothing that will go catastrophic before then as it's my only car. The muffler delete and all the plumbing of the turbo is tight, put some soapy water around the discharge pipes to see if air was blowing out and there isn't. The engine other than that sucking sound sounds like it always has since mile 9 on the odometer. In the video I literally just started the car with my phone on hoping to catch the noise. In my experience until the motor actually gets going its a little noisy, I mean you can hear in the video it starts to quiet down. I dunno, hopefully it doesn't crap out on me before next week. When I say performance btw im talking about the turbo lagging after shifting, it still pulls as hard as it ever has it just doesn't keep pulling through the gears like it did. There's a lag now with the oem diverter valve back on versus the Forge valve but as I said I heard the flutter and was worried it might be causing turbo surge so I took it off for now until I could get some insight or opinions.

 

Thanks again guys

 

There's a definite whirring sound in there it's just getting drowned out because of the phone's mic compression, its in the back ground and definitely louder and more noticeable in person. That's the only thing I'm worried about, the chatter is normal or at least it's been that way since it got off the boat and I sat my butt in the drivers seat. Almost sounds like a big old roots supercharger.

 

Just letting everyone know the sound was the forge intake, took it off and never had the problem again. Why it was doing it I dunno?