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 > N55 Turbo Engine / Drivetrain / Exhaust Modifications > My exhaust is making a popping noise?
ARMA SPEED
Post Reply
 
Thread Tools Search this Thread
      10-18-2021, 10:47 AM   #1
a404freedom
Second Lieutenant
a404freedom's Avatar
48
Rep
206
Posts

Drives: BMW 435i M-Sport
Join Date: Jan 2020
Location: Los Angeles, CA

iTrader: (0)

My exhaust is making a popping noise?

I decided to take on a GT4, i was embarrassed, and in the midst of it something gave out. Since then i have been getting a constant popping noise from my exhaust. It happens in park or in idle. The link below is video of what I'm talking about:

https://youtube.com/shorts/6mP9QQ2Vd0g?feature=share
__________________
2016 BMW 435i M-Sport
- JB4 and MHD
- xHP
- Injen intake
- Active Autowerke intercooler
- Active Autowerke charge pipe
- AWE catback

*** I want more!!!***
Appreciate 0
      10-18-2021, 12:25 PM   #2
Racekorboy
Registered
Racekorboy's Avatar
United_States
0
Rep
1
Posts

Drives: BMW M435xi
Join Date: Oct 2021
Location: Tampa, FL

iTrader: (0)

I would set the tune back to stock and see if the pops are still there at idle. Either that or could be a very slight misfire. I dont think something is wrong mechanically within your exhaust per se.
Appreciate 0
      10-18-2021, 12:36 PM   #3
a404freedom
Second Lieutenant
a404freedom's Avatar
48
Rep
206
Posts

Drives: BMW 435i M-Sport
Join Date: Jan 2020
Location: Los Angeles, CA

iTrader: (0)

Quote:
Originally Posted by Racekorboy View Post
I would set the tune back to stock and see if the pops are still there at idle. Either that or could be a very slight misfire. I dont think something is wrong mechanically within your exhaust per se.
I have set all tunes back to stock but i am still getting the same results. I can feel the pop inside my car. I've considered injectors but my gas mileage is fine.
__________________
2016 BMW 435i M-Sport
- JB4 and MHD
- xHP
- Injen intake
- Active Autowerke intercooler
- Active Autowerke charge pipe
- AWE catback

*** I want more!!!***
Appreciate 0
      10-18-2021, 12:58 PM   #4
thejeremyman9
Major General
thejeremyman9's Avatar
4343
Rep
7,555
Posts

Drives: 2015 BMW 335i
Join Date: May 2019
Location: Cali

iTrader: (0)

If you are flashed back to stock you dont have any kind of autoclear on with JB4, right? Did you scan for shadow codes?
Appreciate 0
      10-18-2021, 01:19 PM   #5
a404freedom
Second Lieutenant
a404freedom's Avatar
48
Rep
206
Posts

Drives: BMW 435i M-Sport
Join Date: Jan 2020
Location: Los Angeles, CA

iTrader: (0)

Quote:
Originally Posted by thejeremyman9 View Post
If you are flashed back to stock you dont have any kind of autoclear on with JB4, right? Did you scan for shadow codes?
Quote:
Originally Posted by thejeremyman9 View Post
If you are flashed back to stock you dont have any kind of autoclear on with JB4, right? Did you scan for shadow codes?
Stage 0 would be considered stock right? What exactly are shadow codes. I am running a piggyback tune as well as xHP.
__________________
2016 BMW 435i M-Sport
- JB4 and MHD
- xHP
- Injen intake
- Active Autowerke intercooler
- Active Autowerke charge pipe
- AWE catback

*** I want more!!!***
Appreciate 0
      10-18-2021, 01:25 PM   #6
thejeremyman9
Major General
thejeremyman9's Avatar
4343
Rep
7,555
Posts

Drives: 2015 BMW 335i
Join Date: May 2019
Location: Cali

iTrader: (0)

Quote:
Originally Posted by a404freedom View Post
Stage 0 would be considered stock right? What exactly are shadow codes. I am running a piggyback tune as well as xHP.
Well stage 0 i stock tune, yes, but MHD is install installed. That shouldn't suppress codes though. The other thing is making sure JB4 isnt autoclearing codes or anything (used to be a thing). XHP doesnt make a difference here.

Shadow codes are codes the DME has stored but are not active and not enough to produce a CEL or drivetrain malfunction. So you need to actually scan for them to see if they are there.
Appreciate 0
      10-18-2021, 01:37 PM   #7
n55david
Check out my Youtube @n55david!
n55david's Avatar
1288
Rep
3,502
Posts

Drives: 2017 m240i, 2015 X3 x35i
Join Date: Aug 2018
Location: Michigan USA

iTrader: (0)

Garage List
2017 m240i xDrive  [0.00]
2015 X3 x35i  [0.00]
2015 335i xdrive  [0.00]
pull your plugs man.. I've seen this before and it's possibly a plug. could be other things too but check the plugs
__________________
2017 m240i xDrive 10.99@122.86mph bootmod3 stage 2+ ots
2015 335i xDrive 10.95@124.99mph w/bm3 - SOLD
2015 X3 x35i pwg 12.96 catless w/bm3 stage 2 93 ots
IG: @n55david For pics and updates!
Youtube: @ n55david For videos or Racing etc
Appreciate 0
      10-18-2021, 08:07 PM   #8
LA1Z24
Captain
356
Rep
755
Posts

Drives: 2014 435i M Sport
Join Date: Oct 2020
Location: Long Island

iTrader: (0)

Just went through this exact thing and posted about it last week. More than likely an intermediate lever spring has popped off the lever. I don't have an audio clip but that is the same sound I had. I am an auto tech, and found the issue myself after concluding that it was not an ignition or fuel issue. Isolate the issue as fast as possible. I had about 100 miles on mine since I noticed the noise, an the unloaded intermediate lever had already damaged my intake camshaft.
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 07:49 AM.




f30post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, 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