F30POST
F30POST
2012-2015 BMW 3-Series and 4-Series Forum
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > GFB DV+ for n20 making noise
proTUNING Freaks
Post Reply
 
Thread Tools Search this Thread
      09-04-2020, 11:14 AM   #1
Carlosskrr
Private First Class
23
Rep
101
Posts

Drives: Bmw f36
Join Date: Oct 2019
Location: Florida

iTrader: (1)

So I recently installed the GFBDV plus for my n20 WITHOUT the stiffer spring so it could be more OEM like and so I wouldn't get the fluttering noise while maintaining the benefits of not having a plastic dv valve. Is it normal for the car to make fluttering noises even without the stiffer spring ? Is this compressor surge ? Also the guy who installed it told me he had to drain the coolant to install it which I call bs but idk I wasn't going to argue. Any ideas what this could be ? I swore you only got the fluttering noise if you installed the stiffer spring.
Appreciate 0
      09-04-2020, 11:27 AM   #2
Carlosskrr
Private First Class
23
Rep
101
Posts

Drives: Bmw f36
Join Date: Oct 2019
Location: Florida

iTrader: (1)

Noise

[IMG]
[/IMG]
Appreciate 0
      09-04-2020, 11:37 AM   #3
RMachuca3d
Captain
RMachuca3d's Avatar
409
Rep
718
Posts

Drives: F30 328i Msport
Join Date: Aug 2018
Location: WA

iTrader: (2)

Garage List
Thats not bad at all, its from the dv closing while theres still pressure from the turbo. when it can be damaging on the long term is when the flutter happens right after peak boost. Drive it for a while and let it break in and see if that settles down.
Appreciate 1
      09-04-2020, 12:16 PM   #4
Carlosskrr
Private First Class
23
Rep
101
Posts

Drives: Bmw f36
Join Date: Oct 2019
Location: Florida

iTrader: (1)

Quote:
Originally Posted by RMachuca3d View Post
Thats not bad at all, its from the dv closing while theres still pressure from the turbo. when it can be damaging on the long term is when the flutter happens right after peak boost. Drive it for a while and let it break in and see if that settles down.
You were able to see the vid ? It doesn't show up for me. So compressor surge is when you get the fluttering noise right after you let go of the throttle ?
Appreciate 0
      09-04-2020, 05:32 PM   #5
RMachuca3d
Captain
RMachuca3d's Avatar
409
Rep
718
Posts

Drives: F30 328i Msport
Join Date: Aug 2018
Location: WA

iTrader: (2)

Garage List
Quote:
Originally Posted by Carlosskrr View Post
You were able to see the vid ? It doesn't show up for me. So compressor surge is when you get the fluttering noise right after you let go of the throttle ?
Yes, but its not happening at peak boost, so its not so bad.
Appreciate 1
      09-23-2020, 02:41 PM   #6
D041987
Big Turbo Boys N Girls
D041987's Avatar
United_States
288
Rep
554
Posts

Drives: 2012 328I 6speed
Join Date: Apr 2016
Location: Lynnwood, WA

iTrader: (0)

You are fine, that is nothing to worry about. It is still stiff and will break in and become looser the more you drive it. I once ran without a BOV on a turbo 2jz with 650WHP for 40K. Nothing happened to turbo or engine. Not what I would recommend but what you are hearing is at the very bottom of the rpm where boost is not harmful so nothing to worry about.
__________________
2012 F30: 5959 Big Turbo, Top Mount Mani+ DP+Intake, CSF FMIC, FTP CP, Walbro 450LPFP, AIC 4 with BM3, ZF Race 4 Puck and Non SSA Pressure plate, Catless, 3.5" Quad Muffler, Custom Valved Bilstein B8 + H&R SS. Max HP 428WHP 452WTRQ.
Appreciate 1
      09-23-2020, 05:07 PM   #7
Flro2131
New Member
0
Rep
21
Posts

Drives: 2017 bmw f30 320i
Join Date: Sep 2018
Location: United States

iTrader: (0)

Quote:
Originally Posted by Carlosskrr View Post
So I recently installed the GFBDV plus for my n20 WITHOUT the stiffer spring so it could be more OEM like and so I wouldn't get the fluttering noise while maintaining the benefits of not having a plastic dv valve. Is it normal for the car to make fluttering noises even without the stiffer spring ? Is this compressor surge ? Also the guy who installed it told me he had to drain the coolant to install it which I call bs but idk I wasn't going to argue. Any ideas what this could be ? I swore you only got the fluttering noise if you installed the stiffer spring.
I also installed a Gfb dv awhile back. I had an injen intake too. After I replaced the turbo inlet pipe it started to sound louder in sport and now driving the car with that sound makes it to die for. Trust me.
Appreciate 0
      09-23-2020, 05:47 PM   #8
NZf30
New Member
New Zealand
4
Rep
12
Posts

Drives: BMW f30 328i sportline
Join Date: Jul 2019
Location: new zealand

iTrader: (0)

I have had my diverter valve in for a year now and have never had any flutter noise. As for draining the coolant thats BS.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 12:56 AM.




f30post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST