AUTOID G42 M240i xDrive sounds epic with Milltek + Decat Downpipe

Jack@AUTOID · 10-03-2022, 04:59 PM

Featured on BIMMERPOST.com

Just installed new G42-specific B58 decat downpipe. Super easy install with great results. Definite power increase using the bum-dyno. Will get some proper numbers soon.

CEL light come up after around 100 miles. Going to try an O2 spacer to see if this helps. Can remove the light in the meantime clearing it via JB4.

Downpipe on the AUTOID store here: https://autoid.co/products/bm-2-seri...em-by-psr-2021

Made a video:

M240SLC · 10-03-2022, 07:30 PM

Quote:

Originally Posted by Jack@AUTOID

Just installed new G42-specific B58 decat downpipe. Super easy install with great results. Definite power increase using the bum-dyno. Will get some proper numbers soon.

CEL light come up after around 100 miles. Going to try an O2 spacer to see if this helps. Can remove the light in the meantime clearing it via JB4.

Downpipe on the AUTOID store here: https://autoid.co/products/bm-2-seri...em-by-psr-2021

Sounds good, mate! Any plans to hit up Officially Gassed and put 'er up against EVII (EVIL) PEA again? I think it would take that RS3 to Gapplebees every single time now.

Jack@AUTOID · 10-04-2022, 02:23 AM

[QUOTE=M240SLC;29400369]Sounds good, mate! Any plans to hit up Officially Gassed and put 'er up against EVII (EVIL) PEA again? I think it would take that RS3 to Gapplebees every single time now.[/QUOTE]

Yeah gonna get her dyno’d then will hit him up for sure. It feels 10% faster than before. Combination of moving up a map on the JB4 and the downpipe together.

mblaucoupe135 · 10-04-2022, 09:08 AM

Quote:

Originally Posted by Jack@AUTOID

Just installed new G42-specific B58 decat downpipe. Super easy install with great results. Definite power increase using the bum-dyno. Will get some proper numbers soon.

CEL light come up after around 100 miles. Going to try an O2 spacer to see if this helps. Can remove the light in the meantime clearing it via JB4.

Downpipe on the AUTOID store here: https://autoid.co/products/bm-2-series-m240i-g42-xdrive-downpipe-exhaust-system-by-psr-2021

Made a video:
https://youtu.be/lyS6q2xz8Z8

Sounds amazing!

E63M6_G42M240i · 10-04-2022, 03:51 PM

If you want more sound than an aftermarket muffler system alone give you, an alternative is to delete the muffler, install resonators, and install a high flow catted downpipe. Emissions legal, no smell, no check engine lights, more power, and aggressive sound. The only detriment is it will be louder in all situations vs a valved muffler system. You have to decide what's best for you. I'm waiting for AutoID and their catted DP!

Limegrntaln · 10-05-2022, 05:06 AM

Sucks for us all of the S55s sound better than the S58.

The Zimmer · 10-05-2022, 05:25 AM

@Jack,

Let us know if the o2 spacer works trying find a downpipe for my 540i that does not require a map

Jack@AUTOID · 10-05-2022, 06:50 AM

Quote:

Originally Posted by The Zimmer

@Jack,

Let us know if the o2 spacer works trying find a downpipe for my 540i that does not require a map

Yeah it's on the way. Will let you know.

In the mean time, JB4 can clear the CEL manually each time it comes up. Takes 30s to do.

The Zimmer · 10-05-2022, 08:42 AM

Quote:

Originally Posted by Jack@AUTOID

Quote:

Originally Posted by The Zimmer

@Jack,

Let us know if the o2 spacer works trying find a downpipe for my 540i that does not require a map

Yeah it's on the way. Will let you know.

In the mean time, JB4 can clear the CEL manually each time it comes up. Takes 30s to do.

Thanks Jack let me know

Justao · 10-05-2022, 01:44 PM

Quote:

Originally Posted by Jack@AUTOID

Quote:

Originally Posted by The Zimmer

@Jack,

Let us know if the o2 spacer works trying find a downpipe for my 540i that does not require a map

Yeah it's on the way. Will let you know.

In the mean time, JB4 can clear the CEL manually each time it comes up. Takes 30s to do.

Correct me if I'm wrong, but if you delete cats and you get a CEL, your car goes into limp… clearing the fault won't help

freshxdough · 10-05-2022, 02:42 PM

Quote:

Originally Posted by Justao

Quote:

Originally Posted by Jack@AUTOID

Quote:

Originally Posted by The Zimmer

@Jack,

Let us know if the o2 spacer works trying find a downpipe for my 540i that does not require a map

Yeah it's on the way. Will let you know.

In the mean time, JB4 can clear the CEL manually each time it comes up. Takes 30s to do.

Correct me if I'm wrong, but if you delete cats and you get a CEL, your car goes into limp… clearing the fault won't help

Just CEL. No limp mode.

stylinexpat · 10-06-2022, 01:42 AM

Sounds amazing.. I used Miltek exhausts like 10 years ago back when they mainly worked exhausts for WRX's.. Bought one back in the days from the for my WRX and my VW R32..

Nicolas05 · 10-07-2022, 01:16 PM

Getting the DCE-parts 200cel high flow downpipe next week. Very curious in the difference with stock.

dasistato · 10-13-2022, 08:17 AM

Hey guys does downpipe void warranty?

Alpine Flyer · 10-13-2022, 01:12 PM

Quote:

Originally Posted by dasistato

Hey guys does downpipe void warranty?

Your powertrain warranty? Oh hell yes

XC3LLR8 · 10-17-2022, 05:53 PM

Quote:

Originally Posted by dasistato

Hey guys does downpipe void warranty?

Not unless it's the cause of a failure.

hyperpip · 01-20-2024, 03:07 AM

Quote:

Originally Posted by Jack@AUTOID

Yeah it's on the way. Will let you know.

In the mean time, JB4 can clear the CEL manually each time it comes up. Takes 30s to do.

Did you ever do the o2 spacer? Would love to hear the results and any pics of install

jibnibbin · 11-08-2024, 04:54 PM

Quote:

Originally Posted by Jack@AUTOID

Yeah it's on the way. Will let you know.

In the mean time, JB4 can clear the CEL manually each time it comes up. Takes 30s to do.

Did this work?

10-03-2022, 04:59 PM	#1
Jack@AUTOID Captain 1951 Rep 612 Posts Drives: G87 M2, G80 M3, F97X3M, F87 M2 Join Date: Nov 2017 Location: London, UK iTrader: (0)	AUTOID G42 M240i xDrive sounds epic with Milltek + Decat Downpipe Featured on BIMMERPOST.com Just installed new G42-specific B58 decat downpipe. Super easy install with great results. Definite power increase using the bum-dyno. Will get some proper numbers soon. CEL light come up after around 100 miles. Going to try an O2 spacer to see if this helps. Can remove the light in the meantime clearing it via JB4. Downpipe on the AUTOID store here: https://autoid.co/products/bm-2-seri...em-by-psr-2021 Made a video: __________________ Currently Driving: '23 G87 M2, '22 BMW M240i xDrive, '18 F87 M2, '98 E36 318is @AUTOID \| WWW.AUTOID.CO \| SALES@AUTOID.CO
	Appreciate 10 P_Chris168.50 M240SLC393.50 donnyfontaine176.00 KJ10502.50 E92M3GT124.50 russell21148.50 M3 boi3222.50 eleven11423.50 agentrnge404.00 Tenac4837.50 Tweet Quote

10-04-2022, 02:23 AM	#3
Jack@AUTOID Captain 1951 Rep 612 Posts Drives: G87 M2, G80 M3, F97X3M, F87 M2 Join Date: Nov 2017 Location: London, UK iTrader: (0)	[QUOTE=M240SLC;29400369]Sounds good, mate! Any plans to hit up Officially Gassed and put 'er up against EVII (EVIL) PEA again? I think it would take that RS3 to Gapplebees every single time now.[/QUOTE] Yeah gonna get her dyno’d then will hit him up for sure. It feels 10% faster than before. Combination of moving up a map on the JB4 and the downpipe together.
	Appreciate 1 M240SLC393.50 Quote

10-04-2022, 03:51 PM	#5
E63M6_G42M240i Lieutenant 1131 Rep 677 Posts Drives: 2024 TR G80 M3CX Join Date: Jul 2022 Location: Orange County, CA, USA iTrader: (0) Garage List 2024 G80 M3 Comp Xd ... [10.00]	If you want more sound than an aftermarket muffler system alone give you, an alternative is to delete the muffler, install resonators, and install a high flow catted downpipe. Emissions legal, no smell, no check engine lights, more power, and aggressive sound. The only detriment is it will be louder in all situations vs a valved muffler system. You have to decide what's best for you. I'm waiting for AutoID and their catted DP!
	Appreciate 1 mblaucoupe135309.50 Quote

10-05-2022, 05:06 AM	#6
Limegrntaln Major General 14376 Rep 7,248 Posts Drives: 2024 Model S Plaid Join Date: Mar 2008 Location: Sacramento Area iTrader: (4) Garage List 2022 G82 M4 Competi ... [9.42]	Sucks for us all of the S55s sound better than the S58. __________________ SOLD: 2022 DravitGrau /Black Full Merino M4 Competition M xDrive / Production Week 34/ Delivered 10/19/21/ IG: dravit_m4_comp YT: G Dubyou
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10-05-2022, 05:25 AM	#7
The Zimmer Lieutenant 264 Rep 547 Posts Drives: BMW G31 Touring Join Date: Jun 2020 Location: United Kingdom iTrader: (0)	@Jack, Let us know if the o2 spacer works trying find a downpipe for my 540i that does not require a map
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10-06-2022, 01:42 AM	#12
stylinexpat Major 432 Rep 1,427 Posts Drives: Join Date: Aug 2008 iTrader: (0)	Sounds amazing.. I used Miltek exhausts like 10 years ago back when they mainly worked exhausts for WRX's.. Bought one back in the days from the for my WRX and my VW R32..
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10-07-2022, 01:16 PM	#13
Nicolas05 Private First Class 300 Rep 150 Posts Drives: BMW g42 M240i Join Date: Dec 2021 Location: Belgium iTrader: (0)	Getting the DCE-parts 200cel high flow downpipe next week. Very curious in the difference with stock.
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10-13-2022, 08:17 AM	#14
dasistato Private 47 Rep 87 Posts Drives: G42 M240i, E30 Join Date: Apr 2016 Location: VA iTrader: (0)	Hey guys does downpipe void warranty?
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