Catless downpipe and MOT

kamsingh · 07-08-2019, 02:22 PM

Anyone had any problems with a catless downpipe, but keeping the secondary cats OEM? Currently running a '15 M4

Cheers

Kam

SteveChester · 07-08-2019, 02:30 PM

Nope mine passed fine ( secondary cats retained primary removed )

kamsingh · 07-08-2019, 02:37 PM

Quote:

Originally Posted by SteveChester

Nope mine passed fine ( secondary cats retained primary removed )

Cheers Steve,

Which catless downpipe did you go for? Would you recommend it? How much louder vs stock?

Kam

SteveChester · 07-08-2019, 03:27 PM

MTC Motorsport.

Yes it's louder

SteveChester · 07-08-2019, 03:30 PM

Quote:

Originally Posted by SteveChester

MTC Motorsport.

Yes it's louder

Shiny.

TheMaster1971NL · 07-24-2019, 06:33 AM

do you get an error message about the catalyst?

SteveChester · 07-24-2019, 04:45 PM

Quote:

Originally Posted by TheMaster1971NL

do you get an error message about the catalyst?

You have to code it out ( easy with Bootmod3 remap tool ).

TheMaster1971NL · 07-25-2019, 03:51 AM

Quote:

Originally Posted by SteveChester

You have to code it out ( easy with Bootmod3 remap tool ).

I allready did

07-08-2019, 02:22 PM	#1
kamsingh Enlisted Member 1 Rep 30 Posts Drives: M4 Join Date: Feb 2019 Location: London iTrader: (0)	Catless downpipe and MOT Anyone had any problems with a catless downpipe, but keeping the secondary cats OEM? Currently running a '15 M4 Cheers Kam
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07-08-2019, 02:30 PM	#2
SteveChester Brigadier General 2472 Rep 4,653 Posts Drives: F82 M4 Join Date: Oct 2009 Location: Chester iTrader: (0) Garage List 2014 BMW F82 M4 [0.00]	Nope mine passed fine ( secondary cats retained primary removed ) __________________ Steve Roberts UK F82 M4 I'm running the 2024 London Marathon for the British Forces Foundation - https://www.justgiving.com/fundraising/sr5/
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07-08-2019, 03:27 PM	#4
SteveChester Brigadier General 2472 Rep 4,653 Posts Drives: F82 M4 Join Date: Oct 2009 Location: Chester iTrader: (0) Garage List 2014 BMW F82 M4 [0.00]	MTC Motorsport. Yes it's louder __________________ Steve Roberts UK F82 M4 I'm running the 2024 London Marathon for the British Forces Foundation - https://www.justgiving.com/fundraising/sr5/
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07-24-2019, 06:33 AM	#6
TheMaster1971NL Second Lieutenant 108 Rep 295 Posts Drives: BMW M3 F80 Join Date: Mar 2019 Location: Netherlands iTrader: (0)	do you get an error message about the catalyst?
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