M5 Exhaust on 550i

Zux550 · 05-10-2016, 02:20 PM

Was curious which resonator people removed on the 550i exhaust the two first round cans (B in pic) or the square one closer to the rear (A in pic). Not looking for super loud and hate drone.

Thanks!

Hasser · 05-10-2016, 02:37 PM

isnt the first two round cans (B) the secondary cats?

you would want to remove the section (A) and put in a straight X pipe

bajanbanker · 05-10-2016, 04:11 PM

Quote:

Originally Posted by Hasser

isnt the first two round cans (B) the secondary cats?

you would want to remove the section (A) and put in a straight X pipe

Agreed...remove section A and add an x-pipe. I currently have it on my 550 and it sounds great!

Btw..the shop will have to custom fabricate the x-pipe as the M5 muffler piping is 3" while the stock 550 piping is 2.75"

SLVSRFR · 05-11-2016, 05:42 AM

Those are not secondary cats.

Hasser · 05-11-2016, 05:57 AM

Quote:

Originally Posted by BCK2BLN

Those are not secondary cats.

What are they then?

lsturbointeg · 05-11-2016, 07:45 AM

if they were cats you would have 02 sensors on them

SLVSRFR · 05-11-2016, 03:16 PM

Quote:

Originally Posted by Hasser

What are they then?

The first two closest to the downpipes are twin resonators, the box looking this is known as the factory H Pipe.

Quote:

Originally Posted by lsturbointeg

if they were cats you would have 02 sensors on them

Exactly.

05-10-2016, 02:20 PM	#1
Zux550 New Member 3 Rep 21 Posts Drives: 2017 740e + 2015 M4 Join Date: Apr 2016 Location: New York iTrader: (1)	M5 Exhaust on 550i - Resonator Removal? Was curious which resonator people removed on the 550i exhaust the two first round cans (B in pic) or the square one closer to the rear (A in pic). Not looking for super loud and hate drone. Thanks! Attached Images
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05-10-2016, 02:37 PM	#2
Hasser Major 447 Rep 1,161 Posts Drives: 2014 F10 M5 Join Date: Feb 2015 Location: Isle of Man iTrader: (0)	isnt the first two round cans (B) the secondary cats? you would want to remove the section (A) and put in a straight X pipe __________________ 2014 M5 1990 E30 318i Touring 1999 E38 728i -sold M235i - sold Activehybrid 5 - sold
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05-11-2016, 05:42 AM	#4
SLVSRFR Captain 245 Rep 785 Posts Drives: BMW 550i Join Date: May 2015 Location: SoCal iTrader: (0)	Those are not secondary cats.
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05-11-2016, 07:45 AM	#6
lsturbointeg Lieutenant General 9153 Rep 14,522 Posts Drives: 2011 535i Jet Black Join Date: Aug 2014 Location: Asian lost in OH iTrader: (0)	if they were cats you would have 02 sensors on them __________________ ~F90Conversion~21"3Piece Forged AvantGardeWheels~KWV1Coilovers~CQUENCE slotted/drilled rotors~GoodridgeStainlesslines~MeisterschaftQuadEx haust~Akrapovic 4"tips~VRSF DP~VRSF CP~TurboSmart BOV~K&N filter~CarbonFiberExteriorComponents~GladenAlphaCo mponents~MatchUp7BMW~Punch P300-12T~ Follow me on Instagram: lsturbointeg
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