[3-Serious]

Well I was having a problem holding boost a whiles back, and finally after bringing it in to the dealer found out it was the turbos! I did think it was odd because my millage is at 30k but figured hey as long as it was covered under warranty. Only thing is now during part throttle I sometimes here the turbos spool with some kind of stutter noise? If I'm gentile on the throttle no stutter and no stutter doing WOT. My mods are DCI, PROcede v5 rev3, and AR cat-less down pipes. Any ideas?

[dlbrooks18]

Is the "stutter" noise waste gate rattle?

[3-Serious]

Possibly but would it make sense only hearing it during part throttle? I remember I use to have this problem on my srt-4 where the car would boost creep then make the flutter/stutter noise. Curious to see if anyone else hears this?

[Beemw335]

Off topic ?
Did you remove all mods before getting the turbos replaced?

[3-Serious]

Originally Posted by Beemw335

Off topic ?
Did you remove all mods before getting the turbos replaced?

Yes I did. And it was worth it.

[imageautodetail]

prob wastegates actuator arm needs adjusting, mine did the same thing

[3-Serious]

Originally Posted by imageautodetail

prob wastegates actuator arm needs adjusting, mine did the same thing

How do you adjust it? And so you had it adjusted then the sound stoped I was thinking maybe its too tight and that's why the flutter happens during part throttle.

[plague]

is the sound your speaking of like a hissy blow off sound. like air escaping a little leak, like the pssss sound you would make toward a cat lol. i get that sound on partial throttle on and off and if i give it just a TAD more throttle it stops. its like just at little certain points. like on and off choppy loud windy hissing lol.. if so, i have it to, but see no problems. i hold boost perfectly. all good

[imageautodetail]

Originally Posted by nickkg37s

How do you adjust it? And so you had it adjusted then the sound stoped I was thinking maybe its too tight and that's why the flutter happens during part throttle.

you can get to one while still mount think that is the right bank, the other you have damn near pull everything off, search for Mr.5 DIY he had a good write up, but since the dealer did them just take it in, mine were about a full turn off out of the box...and yes it stops the rattle

this is wastegate rattle...

on a cold start it sounds like a vtec honda, and until it is warmed up you get the rattle on acceleration and when you push in the clutch and let off the gas, but when the car gets warm it almost goes away, if this is what your experiencing, it is the wastegates and dont let BMW tell you it is normal, minimal noise is normal, but when it makes you want to loose your mind, it is not

[Mike@N54Tuning.com]

Just bring it back to the dealer for them to look at. Have you put all your mods back?

Mike

[3-Serious]

Originally Posted by plague

is the sound your speaking of like a hissy blow off sound. like air escaping a little leak, like the pssss sound you would make toward a cat lol. i get that sound on partial throttle on and off and if i give it just a TAD more throttle it stops. its like just at little certain points. like on and off choppy loud windy hissing lol.. if so, i have it to, but see no problems. i hold boost perfectly. all good

Exactlyyyyy what I have! Yeah it holds boost fine some times even to well. Lol Sometimes I spike like 18psi on map 2.

[3-Serious]

Originally Posted by imageautodetail

you can get to one while still mount think that is the right bank, the other you have damn near pull everything off, search for Mr.5 DIY he had a good write up, but since the dealer did them just take it in, mine were about a full turn off out of the box...and yes it stops the rattle

this is wastegate rattle...

on a cold start it sounds like a vtec honda, and until it is warmed up you get the rattle on acceleration and when you push in the clutch and let off the gas, but when the car gets warm it almost goes away, if this is what your experiencing, it is the wastegates and dont let BMW tell you it is normal, minimal noise is normal, but when it makes you want to loose your mind, it is not

Yeah but it doesn't sound like a rattle I don't hear anything out of the ordinary besides when I part throttle it I get a choppy swoosh noise.