OEM Competition Exhaust Modification

///SAL · 05-03-2014, 08:50 AM

Hey guys im looking to make the oem exhaust louder on low rpm's. I noticed that the exhaust has flaps, if i zip tie the flaps open at all times will i get a cel? I seen a tread about this in the 6 series forum. But i wanted to see if any M owners have done it too? Thanks

AGS · 05-03-2014, 10:14 AM

No CEL. I have mine wired open, nice slight increase in sound.

M6-Coupe · 05-03-2014, 10:17 AM

Quote:

Originally Posted by AGS

No CEL. I have mine wired open, nice slight increase in sound.

How did you do that? any instruction?

///SAL · 05-03-2014, 10:20 AM

Quote:

Originally Posted by AGS

No CEL. I have mine wired open, nice slight increase in sound.

Any mpg or torque loss?

RajG · 05-03-2014, 11:01 AM

I recommend the Exhaust Meister this way you can control when you want the flaps open. A lot of forum members have done it.

AGS · 05-04-2014, 07:15 AM

Quote:

Originally Posted by M6-Coupe

How did you do that? any instruction?

You will need three things:
1. Uncoated aluminum wire
2. Wire cutters
3. A 1/2 inch square by 1 foot long piece of wood

It's then a fairly easy process to wire open the valves:
1. Jack up the car to give yourself some more room to work. I would recommend giving the muffler/exhaust system a good rinsing before crawling under the car to limit the amount of sand/gravel that drops in your face since you'll be right under the muffler while you work.
2. Once under the car, manually open the valve and insert the piece of wood up the outboard tailpipe to hold the valve open.
3. Cut a length of wire about 8 inches long.
4. Fasten one end of the wire to the bracket that mounts the valve actuator to the exhaust system.
5. Wrap the wire around the joint in the valve control arm a few times and then fasten the other end around the valve actuator bracket.
6. Remove the piece of wood from the exhaust pipe and ensure the valve remains open.

Below is a repost of a picture that member ColdList took of the valve wired open.

Quote:

Originally Posted by ///SAL

Any mpg or torque loss?

No impact on performance. Just a little louder exhaust sound.

DrewM5 · 05-05-2014, 08:37 AM

You spent $100K+ on the car. The exhaustmeister is under $200. Why would you spend the time wiring these valves open?

M6-Coupe · 05-05-2014, 08:55 AM

Quote:

Originally Posted by DrewM5

You spent $100K+ on the car. The exhaustmeister is under $200. Why would you spend the time wiring these valves open?

wow.... it's interesting. actually is not that much... it's cheaper
www.exhaustmeister.com

JOHNBMWM5 · 05-05-2014, 09:10 AM

Quote:

Originally Posted by AGS

No CEL. I have mine wired open, nice slight increase in sound.

Me Too, use 3mm alloy wire though.

JOHNBMWM5 · 05-05-2014, 09:11 AM

Quote:

Originally Posted by ///SAL

Any mpg or torque loss?

NOPE

AGS · 05-05-2014, 10:32 AM

Quote:

Originally Posted by DrewM5

You spent $100K+ on the car. The exhaustmeister is under $200. Why would you spend the time wiring these valves open?

For some the exhaustmeister is a great solution to be able to open and close the valves as desired. I prefer having the valves open 100% of the time, so why buy a device for $200 to achieve a result I can get with $1 worth of wire? In addition, it takes less than 5 minutes per side to wire the valves open which is less time that it takes (so I've read) to pull the trim panels in the trunk to install the exhaustmeister. It's a win-win as far as I'm concerned.

greentrbo95gst · 05-05-2014, 10:35 AM

Quote:

Originally Posted by AGS

For some the exhaustmeister is a great solution to be able to open and close the valves as desired. I prefer having the valves open 100% of the time, so why buy a device for $200 to achieve a result I can get with $1 worth of wire? In addition, it takes less than 5 minutes per side to wire the valves open which is less time that it takes (so I've read) to pull the trim panels in the trunk to install the exhaustmeister. It's a win-win as far as I'm concerned.

Spoken like a true DSMer, haha. I know where you coming from man.

DrewM5 · 05-05-2014, 10:51 AM

Quote:

Originally Posted by AGS

For some the exhaustmeister is a great solution to be able to open and close the valves as desired. I prefer having the valves open 100% of the time, so why buy a device for $200 to achieve a result I can get with $1 worth of wire? In addition, it takes less than 5 minutes per side to wire the valves open which is less time that it takes (so I've read) to pull the trim panels in the trunk to install the exhaustmeister. It's a win-win as far as I'm concerned.

I can assure you that it took you longer to do your wire fix than it took me to install the Exhaustmeister. I can't justify jury rigging a car at this level. I guess I just prefer finesse over force.

URBAN LEGEND · 05-05-2014, 11:03 AM

Quote:

Originally Posted by DrewM5

You spent $100K+ on the car. The exhaustmeister is under $200. Why would you spend the time wiring these valves open?

Maybe the reason he can afford a 100k car is because he's smart and spends money only where needed.

JOHNBMWM5 · 05-05-2014, 11:26 AM

Quote:

Originally Posted by AGS

For some the exhaustmeister is a great solution to be able to open and close the valves as desired. I prefer having the valves open 100% of the time, so why buy a device for $200 to achieve a result I can get with $1 worth of wire? In addition, it takes less than 5 minutes per side to wire the valves open which is less time that it takes (so I've read) to pull the trim panels in the trunk to install the exhaustmeister. It's a win-win as far as I'm concerned.

SECONDED, why wast the money, when the car gets part exchanged/sold, wire cutters and job done.

JOHNBMWM5 · 05-05-2014, 11:28 AM

Quote:

Originally Posted by DrewM5

I can't justify jury rigging a car at this level. I guess I just prefer finesse over force.

I "force" needed just common sense and 10 minutes.

DrewM5 · 05-05-2014, 12:39 PM

I guess we will just have to agree to disagree on this point. There is no right or wrong, just opinons.

PhilT3 · 05-05-2014, 11:12 PM

Only my way is the right way.

DrewM5 · 05-06-2014, 06:58 AM

[ :QUOTE=PhilT3;15907646]Only my way is the right way.[/QUOTE]

PhilT3 · 05-06-2014, 11:54 AM

Quote:

Originally Posted by DrewM5

[ :QUOTE=PhilT3;15907646]Only my way is the right way.

[/QUOTE]

Spinny02 · 05-06-2014, 01:50 PM

Get these http://ind-distribution.com/ind/bran...m5-centerpipes

A big thanks to stealth pilot for his center pipes( resonator delete)! I just had his old centerpipes installed on my cp. I think it's a perfect tone, not crazy loud but packs a punch, no cel and no drone.

Axelf · 05-06-2014, 01:53 PM

If doing this the wired open version........ do you need to do anything with the vacuum pipe?

05-03-2014, 08:50 AM	#1
///SAL Captain 38 Rep 846 Posts Drives: 2014 ///M5 ZCP Join Date: Aug 2013 Location: QUEENS, NY iTrader: (0)	OEM Competition Exhaust Modification Hey guys im looking to make the oem exhaust louder on low rpm's. I noticed that the exhaust has flaps, if i zip tie the flaps open at all times will i get a cel? I seen a tread about this in the 6 series forum. But i wanted to see if any M owners have done it too? Thanks
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05-03-2014, 10:14 AM	#2
AGS Major 501 Rep 1,399 Posts Drives: 2022 M5 Competition Join Date: May 2012 Location: NJ iTrader: (0)	No CEL. I have mine wired open, nice slight increase in sound.
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05-03-2014, 11:01 AM	#5
RajG Private First Class 26 Rep 166 Posts Drives: '14 M5 CP Join Date: Jan 2009 Location: Northern NJ iTrader: (0)	I recommend the Exhaust Meister this way you can control when you want the flaps open. A lot of forum members have done it. __________________ Current Stable ?19 M5 CP ?19 X6M
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05-05-2014, 08:37 AM	#7
DrewM5 Captain 53 Rep 739 Posts Drives: SG E60 M5 Join Date: Sep 2012 Location: New York iTrader: (0)	You spent $100K+ on the car. The exhaustmeister is under $200. Why would you spend the time wiring these 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
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05-05-2014, 12:39 PM	#17
DrewM5 Captain 53 Rep 739 Posts Drives: SG E60 M5 Join Date: Sep 2012 Location: New York iTrader: (0)	I guess we will just have to agree to disagree on this point. There is no right or wrong, just opinons. __________________ 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
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05-05-2014, 11:12 PM	#18
PhilT3 6'0 / 250lb 137 Rep 1,797 Posts Drives: 2014 M5 Join Date: Feb 2012 Location: NW Philly Suburb iTrader: (0)	Only my way is the right way. __________________ Build: '14 M5 - Space Gray / Full Sakhir Orange / Alum Trace / Black 343's / Exec / Driver Assist / LED Mods: SunTek CXP tint - Vinyl-wrapped door handle chrome - Macht Schnell 12mm spacers - Pedalhaus pedals - iND Cosmetic Package - Polished 90mm exh tips - Coded by v12 - 21" HRE S107's polished lip/black center
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05-06-2014, 06:58 AM	#19
DrewM5 Captain 53 Rep 739 Posts Drives: SG E60 M5 Join Date: Sep 2012 Location: New York iTrader: (0)	[ :QUOTE=PhilT3;15907646]Only my way is the right way.[/QUOTE]
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05-06-2014, 01:50 PM	#21
Spinny02 Lieutenant Colonel 124 Rep 1,840 Posts Drives: '14 M5 CP Dinan Stage 2 Join Date: Jun 2013 Location: Houston, Tx iTrader: (2) Garage List 2018 Escalade ESV P ... [0.00] 2014 M5 Dinan S1 [0.00]	Get these http://ind-distribution.com/ind/bran...m5-centerpipes A big thanks to stealth pilot for his center pipes( resonator delete)! I just had his old centerpipes installed on my cp. I think it's a perfect tone, not crazy loud but packs a punch, no cel and no drone. __________________
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05-06-2014, 01:53 PM	#22
Axelf Lieutenant 75 Rep 573 Posts Drives: 2016 Z4 35is... Join Date: Sep 2011 Location: Durham... U.K iTrader: (3)	If doing this the wired open version........ do you need to do anything with the vacuum pipe? __________________ /// 1M V O sadly gone /// M5 2014 LCI gone.../// M3 2015..gone..Z4 35i2015..gone ///M135i 2015 Lci...gone/// M3 2016 Lci Suzuka Grey .gone Z4 35is 2016 Now here
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