THE LARGEST BMW 2-SERIES FORUM ON THE PLANET
2Addicts
2Addicts
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning CG Precision Valve Controller

Post Reply
 
Thread Tools Search this Thread
      07-16-2014, 11:01 AM   #1
cbbplanet
First Lieutenant
28
Rep
319
Posts

Drives: space shuttle
Join Date: Jul 2011
Location: Taipei

iTrader: (5)

CG Precision Valve Controller

So I came across this... which is interesting. This supposedly work with stock or Performance exhaust. This is basically the same control that high end aftermarket exhaust have such as iPE and Akrapovic. This open and closes the valve so you can get the sound to be loud or quiet. Only concern I have is if it'll damage your exhaust?

http://www.cgprecision.com/cms/index...und-controller

Appreciate 0
      07-16-2014, 03:04 PM   #2
qballis
Lieutenant
United_States
270
Rep
513
Posts

Drives: G80 Comp xdrive
Join Date: Apr 2014
Location: Phoenix, AZ

iTrader: (0)

Does the M performance exhaust have the valves in it still for cold start and comfort vs sport mode?
Appreciate 0
      07-16-2014, 04:17 PM   #3
cbbplanet
First Lieutenant
28
Rep
319
Posts

Drives: space shuttle
Join Date: Jul 2011
Location: Taipei

iTrader: (5)

Quote:
Originally Posted by qballis View Post
Does the M performance exhaust have the valves in it still for cold start and comfort vs sport mode?
Yes. I believe the DDC mode doesn't change anything to the exhaust.
Appreciate 0
      07-16-2014, 06:26 PM   #4
CG Precision
Lieutenant
CG Precision's Avatar
United_States
94
Rep
425
Posts

Drives: 2013 BMW 335i
Join Date: Feb 2014
Location: Tucson AZ

iTrader: (0)

Hi Cbbplanet,

Thank you for the interest. The vsc-1 variable sound controller was designed to create a signal that opens or closes the exhaust valve just like the factory computer does, only at the push of a button whenever you want. There is no damage to the exhaust system or valve motor because we are using the same signals that the valve motor was designed to accept, and there is no negative effect from keeping the exhaust system fully open or closed for extended periods of time. The main function of the factory valve control was to 1. Allow the wastegate to be open during startup to warm up the catalytic converter faster without the exhaust being too loud for some conservative buyers and 2. To close the exhaust at lower rpm and engine load for the same reason, keeping the exhaust note down for conservative drivers. The controller is compatible with any exhaust system that uses the stock valve motor which includes the MPE. Please let us know if you have any other questions or concerns. Thanks,

CG Precision
Appreciate 0
      08-06-2015, 07:58 PM   #5
den525
Captain
185
Rep
869
Posts

Drives: BMW M235i
Join Date: Jan 2015
Location: Sydney

iTrader: (0)

Anyone using this on a 2er?

Looking at getting one as I want more noise 24/7 even in comfort mode... But do occasionally want it back to factory settings if I go for a long drive which is like once every month or 2...

So instead of unplugging it I still have an option without having the wire dangling
Appreciate 0
      08-06-2015, 09:39 PM   #6
Luminous
Captain
Luminous's Avatar
742
Rep
893
Posts

Drives: 2019 M5 Competition
Join Date: Feb 2015
Location: Westchester County, NY

iTrader: (2)

I have this on my 235, works well
Appreciate 0
      08-19-2015, 11:49 PM   #7
den525
Captain
185
Rep
869
Posts

Drives: BMW M235i
Join Date: Jan 2015
Location: Sydney

iTrader: (0)

Yea... got the delivery today... tried to install it... but there's not enough space between the device and the OEM valve controller unit and the "wall" maybe it's because its an aftermarket exhaust.

FAIL.

Maybe I have to use an angle bracket of some kind to try to fit it in...

Last edited by den525; 08-19-2015 at 11:59 PM..
Appreciate 0
      08-20-2015, 08:13 AM   #8
Bee Pee
Brigadier General
United Kingdom
1738
Rep
4,496
Posts

Drives: AW M2 DCT
Join Date: Jun 2010
Location: SW London

iTrader: (3)

Quote:
Originally Posted by CG Precision View Post
Hi Cbbplanet,

Thank you for the interest. The vsc-1 variable sound controller was designed to create a signal that opens or closes the exhaust valve just like the factory computer does, only at the push of a button whenever you want. There is no damage to the exhaust system or valve motor because we are using the same signals that the valve motor was designed to accept, and there is no negative effect from keeping the exhaust system fully open or closed for extended periods of time. The main function of the factory valve control was to 1. Allow the wastegate to be open during startup to warm up the catalytic converter faster without the exhaust being too loud for some conservative buyers and 2. To close the exhaust at lower rpm and engine load for the same reason, keeping the exhaust note down for conservative drivers. The controller is compatible with any exhaust system that uses the stock valve motor which includes the MPE. Please let us know if you have any other questions or concerns. Thanks,

CG Precision
When are CG P coming out with 3.5" turbo back system for M235i ?
__________________
Fettled M135i EB AT - gone but not forgotten:
AW M2 DCT
Appreciate 0
      08-20-2015, 08:20 AM   #9
jetvet
Private First Class
jetvet's Avatar
34
Rep
130
Posts

Drives: 2015 M235i xDrive
Join Date: Sep 2012
Location: Cincinnati

iTrader: (1)

Garage List
Would this be a good solution for quieter start-ups? If I have catless DPs, the startup is pretty loud which I don't like. Obviously it quiets down a little after about 30 seconds but during that time I'm sure my neighbors are rolling their eyes haha.
__________________
Current: 2015 M235i F22 BSM (FBO)
Current: 2015 X5 M Sport CBM (hers)
Previous: 2008 335i E90 Tiag (FBO)
Appreciate 0
      08-20-2015, 10:46 AM   #10
Luminous
Captain
Luminous's Avatar
742
Rep
893
Posts

Drives: 2019 M5 Competition
Join Date: Feb 2015
Location: Westchester County, NY

iTrader: (2)

Quote:
Originally Posted by jetvet
Would this be a good solution for quieter start-ups? If I have catless DPs, the startup is pretty loud which I don't like. Obviously it quiets down a little after about 30 seconds but during that time I'm sure my neighbors are rolling their eyes haha.
Not unless you are currently leaving the flap open at all times.
__________________
2019 SG M5C

2015 SO M3 6MT

2015 BSM M235xi
Appreciate 1
AmuroRay2165.00
      08-20-2015, 10:50 AM   #11
alz0rz
What goes here?
alz0rz's Avatar
450
Rep
1,356
Posts

Drives: 2019 G30 M550i
Join Date: Aug 2011
Location: Florida Space Coast

iTrader: (4)

Garage List
Quote:
Originally Posted by jetvet View Post
Would this be a good solution for quieter start-ups? If I have catless DPs, the startup is pretty loud which I don't like. Obviously it quiets down a little after about 30 seconds but during that time I'm sure my neighbors are rolling their eyes haha.
No, there is a 'cold start' routine programmed into the ECU that causes this. What I did for cold starts when I had a downpipe on the car was to slightly give it throttle and it will quiet down the exhaust. I held it for the or so 30 seconds until the sound goes down.
__________________
2019 G30 M550i

GBNF:
2021 G80 M3, 2019 F90 M5 Competition, 2016 F80 M3, 2014 F22 M235i
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 05:54 AM.




2addicts
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