Exhaust Cut-Outs Install & Video

allmotor_2000 · 03-04-2018, 11:44 PM

I find the stock competition exhaust paired with catless DP's to be a very good mix of civility (cruising / idle) and some aggressiveness under WOT. However, the stock system has some limitations:

1. The X-pipe is restrictive
2. The muffler itself is slightly restrictive under very heavy flow

In my view the stock system is more than capable of 800hp, but tends to falter beyond that when trying to extract the maximum out of this platform.

I decided on a set of dual 3" QTP cutouts. Bought four 3-bolt flanges and had the cutouts mounted just prior to the resonators in the front section. The picture illustrates the position - its effectively like a straight-shot from the DP... down the front section and then straight out. No curves other than the initial turn-down from the DP's.

My car is generally louder than a comparable ZCP with catless DP's given the manifolds, turbo etc. flow a lot more. But when open, its just insane. At high RPM's its a level of ferociousness I have never felt/heard before.

The system seals very well - no leaks at all. The switch is mounted in the little cubby above the driver left-knee. Simple install (once the hardware is welded and mounted). I just tapped power from the cigarette lighter source so all power wiring is inside the vehicle.

Mr. M6 · 03-05-2018, 03:59 AM

great idea, must try

bm5bullit · 03-05-2018, 08:33 AM

High quality workmanship and an excellent mod. This is also on my list of mods.

Used2be · 03-05-2018, 08:44 AM

That will turn some heads at the 1/2 mile! Even before the spectators see the MPH you turn at the end of the run! Well done.

allmotor_2000 · 03-05-2018, 10:43 AM

Thx - came out pretty clean. Ran all the external wiring under the under-body heat shields so it’s tucked away

steeve13m · 03-05-2018, 06:31 PM

no more drone from 1k-2k rpm? or helmholtz pipes needed?

allmotor_2000 · 03-05-2018, 07:06 PM

Quote:

Originally Posted by steeve13m

no more drone from 1k-2k rpm? or helmholtz pipes needed?

Lol.. I get seat vibrators now...

josec70 · 03-05-2018, 09:40 PM

Very cool

WindUp · 01-24-2022, 07:45 PM

Can you tell me what parts you purchased to make this work? I'd like to order them and have my local exhaust shop weld it together. Thanks in advance!

etnsandman · 01-28-2022, 02:25 PM

Could you link the video? I'm very interested in hearing this setup

03-04-2018, 11:44 PM	#1
allmotor_2000 F10 1/4 WR: 9.9s / 142.5mph 1/2 WR: 175.5mph 1087 Rep 1,968 Posts Drives: 2018 RS3, 991 Turbo Join Date: Jul 2014 Location: Westlake Village, CA iTrader: (0)	Exhaust Cut-Outs Install & Video I find the stock competition exhaust paired with catless DP's to be a very good mix of civility (cruising / idle) and some aggressiveness under WOT. However, the stock system has some limitations: 1. The X-pipe is restrictive 2. The muffler itself is slightly restrictive under very heavy flow In my view the stock system is more than capable of 800hp, but tends to falter beyond that when trying to extract the maximum out of this platform. I decided on a set of dual 3" QTP cutouts. Bought four 3-bolt flanges and had the cutouts mounted just prior to the resonators in the front section. The picture illustrates the position - its effectively like a straight-shot from the DP... down the front section and then straight out. No curves other than the initial turn-down from the DP's. My car is generally louder than a comparable ZCP with catless DP's given the manifolds, turbo etc. flow a lot more. But when open, its just insane. At high RPM's its a level of ferociousness I have never felt/heard before. The system seals very well - no leaks at all. The switch is mounted in the little cubby above the driver left-knee. Simple install (once the hardware is welded and mounted). I just tapped power from the cigarette lighter source so all power wiring is inside the vehicle. Attached Images
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03-05-2018, 03:59 AM	#2
Mr. M6 Lieutenant 149 Rep 477 Posts Drives: M6 Join Date: Jan 2018 Location: Bahrain iTrader: (0) Garage List 2014 BMW M6 F06 [9.25]	great idea, must try __________________
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03-05-2018, 08:33 AM	#3
bm5bullit Captain 239 Rep 978 Posts Drives: 2021 BMW M340i Join Date: Jun 2009 Location: Texas iTrader: (0)	Cutouts High quality workmanship and an excellent mod. This is also on my list of mods. __________________ 2021 M340i 2020 X3 M40i - her car 2019 M5, AW, DP's, MSR CAI, BM3, SOLD 2020 Chev. ZR2 Bison truck, Daily Driver
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03-05-2018, 08:44 AM	#4
Used2be Perennial PFC 336 Rep 1,275 Posts Drives: F90 M5 DG/Aragon Join Date: Oct 2012 Location: Michigan, USA iTrader: (0)	That will turn some heads at the 1/2 mile! Even before the spectators see the MPH you turn at the end of the run! Well done.
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03-05-2018, 10:43 AM	#5
allmotor_2000 F10 1/4 WR: 9.9s / 142.5mph 1/2 WR: 175.5mph 1087 Rep 1,968 Posts Drives: 2018 RS3, 991 Turbo Join Date: Jul 2014 Location: Westlake Village, CA iTrader: (0)	Thx - came out pretty clean. Ran all the external wiring under the under-body heat shields so it’s tucked away
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03-05-2018, 06:31 PM	#6
steeve13m Second Lieutenant 61 Rep 294 Posts Drives: F10 M5 Join Date: Jun 2016 Location: USA iTrader: (0)	no more drone from 1k-2k rpm? or helmholtz pipes needed? __________________ 2019 F90 M5 Competition - Marina bay Blue Pearl - Executive and Bowers & Wilkins package Gone:2013 F10 M5-DCT-Montecarlo Pearl Blue-BBMR 800 Stage 1 system 700whp+(93oct) 2004 Lamborghini Gallardo-Manual-Giallo Midas Pearl Yellow-Modified 2018 Range Rover Velar S-White
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03-05-2018, 09:40 PM	#8
josec70 Major General 4074 Rep 5,233 Posts Drives: 22' Individual Chalk M5C Join Date: Dec 2015 Location: Miami iTrader: (2)	Very cool __________________ CURRENT: 22' INDIVIDUAL M5\| CHALK \| TARTUFO \| CCB \| MPE \| H&R \| IND GONE: 19' M5C\| SINGAPORE GREY\| ARAGON\|VELOS VLS-06\|H&R\|iPE\|IND\|XPEL\|CF\|RADENSO GONE: 15' F10 M5\|BSM\|BLACK\|VELOS VSS-S2\|KW\|AKRA\|IND\|CF \|ESCORT 360\|VELOS PIGGY GONE: 13' F10 M5\|SG\|BLACK\|AKRA\|KW\|IND LONG GONE: 09' E60 M5\|02' E39 M5
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01-24-2022, 07:45 PM	#9
WindUp Private 73 Rep 76 Posts Drives: BMW M235i Join Date: May 2019 Location: Tennessee iTrader: (0)	Can you tell me what parts you purchased to make this work? I'd like to order them and have my local exhaust shop weld it together. Thanks in advance!
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01-28-2022, 02:25 PM	#10
etnsandman Second Lieutenant 82 Rep 216 Posts Drives: 2015 M5 Competition Join Date: Jan 2018 Location: Maryville,TN iTrader: (0)	Could you link the video? I'm very interested in hearing this setup
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