01-13-2014, 12:03 PM | #1 |
Colonel
2594
Rep 2,683
Posts
Drives: '24 X7 M60i
Join Date: Jan 2014
Location: Scottsdale, AZ
|
CP Exhaust valve
So, I was looking at the exhaust on my new M5 w/ competition package. I noticed that the outer pipes are closed and there is a valve that controls the flap to open them.
Does anyone know what rpm they open at?
__________________
Ex Stig
'25 M5 Touring (on the list, first slot) '24 X7 M60i '22 M5 CS - (sold) |
01-13-2014, 12:39 PM | #2 |
Lieutenant Colonel
124
Rep 1,840
Posts
Drives: '14 M5 CP Dinan Stage 2
Join Date: Jun 2013
Location: Houston, Tx
|
Nope but if you get the Exhaust Meister you can open /close them when ever you want =)
http://f10.m5post.com/forums/showthread.php?t=877828 |
Appreciate
0
|
01-13-2014, 01:35 PM | #3 | |
Live for today tomorrow never comes
1989
Rep 9,498
Posts |
Quote:
I have wired mine open, sound is nice IMO.
__________________
Live for now, life is too short.
2021 LCI M5 Marina Bay Blue/ Smoked White Leather |
|
Appreciate
0
|
01-13-2014, 02:25 PM | #4 | |
Yankee Air Pirate
151
Rep 978
Posts |
Quote:
I believe the RPM is 3500 where they open in any mode. I also use an exhaustmeister because sometimes its nice for them to be closed. CP exhaust is slightly louder than base exhaust both closed and open.
__________________
2020 ///M5 || 2019 540XI || 2014 ///M5 w/CP || My Epic ED trip report|| || 2009 BMW R1200RT
|
|
Appreciate
0
|
01-13-2014, 02:27 PM | #5 |
Lieutenant Colonel
188
Rep 1,548
Posts |
I was also under the impression that they are closed initially on cold-start to help warm up the Cats faster to decrease emissions.
__________________
CURRENT:
His: Porsche 991 Turbo S Carrera white/Black Hers: BMW X3MC BSM/Black |
Appreciate
0
|
01-13-2014, 03:02 PM | #6 |
Captain
53
Rep 739
Posts |
I suspect it is a function of more than one variable; likely including engine temp, rpm, throttle position, throttle setting, etc. I got the Exhaustmeister and love it. It is very easy to install and cheap enough to make it a much better option for me than wiring the valves open.
__________________
2014 M5 Competition|Space Grey|Black Merino Full Leather|Anthracite Trim|Executive package|LED Lighting Package|Drivers's Assit Package|B&O Sound System|Bel STiR Plus 9500ci|IND Side Markers and Side Vents|Exhaustmeister|HRE P101 Satin Charcoal/Michelin PSS (Summer)|601/Pirelli Sottozero Serie II (Winter)|Coded by V12
|
Appreciate
0
|
01-13-2014, 03:46 PM | #8 |
Major
177
Rep 1,155
Posts |
Yes and yes.
__________________
2017 Porsche 911GTS - Agate Gray on Black
2009 Aston Martin DBS - Casino Royale Gray on Black (sold) 2014 M5 ZCP - Azurite Black over SSII Full (gone) 2009 M5 - Carbon Black over Sepang Full (gone - not forgotten) 2001 740i M-Sport - Carbon Black over Black (gone - not forgotten) |
Appreciate
0
|
01-13-2014, 07:38 PM | #9 |
///MD
1378
Rep 3,998
Posts |
|
Appreciate
0
|
01-14-2014, 03:07 AM | #10 | |
Live for today tomorrow never comes
1989
Rep 9,498
Posts |
Quote:
All Info here.
__________________
Live for now, life is too short.
2021 LCI M5 Marina Bay Blue/ Smoked White Leather |
|
Appreciate
0
|
01-14-2014, 10:31 AM | #12 |
Live for today tomorrow never comes
1989
Rep 9,498
Posts |
__________________
Live for now, life is too short.
2021 LCI M5 Marina Bay Blue/ Smoked White Leather |
Appreciate
0
|
01-15-2014, 12:18 AM | #15 | |
Lieutenant Colonel
231
Rep 1,576
Posts |
Quote:
Thanks. |
|
Appreciate
0
|
01-15-2014, 02:47 AM | #16 |
Live for today tomorrow never comes
1989
Rep 9,498
Posts |
__________________
Live for now, life is too short.
2021 LCI M5 Marina Bay Blue/ Smoked White Leather |
Appreciate
0
|
01-15-2014, 02:48 AM | #17 |
Live for today tomorrow never comes
1989
Rep 9,498
Posts |
__________________
Live for now, life is too short.
2021 LCI M5 Marina Bay Blue/ Smoked White Leather |
Appreciate
0
|
Post Reply |
Bookmarks |
|
|