VID: X5MC Downpipe + Secondary Cat Delete.

ferrari6891 · 02-21-2023, 01:35 PM

Featured on BIMMERPOST.com

As we all know, the stock exhaust sound is just waaaaay too muted. I did a downpipe and secondary cat delete and left the rear section OEM with the valves.

I just missed the initial engine tun-on, but what you hear in the beginning is the cold start. There's 2 revs during cold start and then the last rev is after cold start ends.

Thoughts: I think it's the perfect balance for someone who doesn't want the extreme loudness of a full exhaust system. With that being said, it absolutely roars when you get on it, but quiet when driving relaxed or leaving someones house late at night. Cabin noise is also really balanced and you can hear the turbos spool up much louder and faster!

All work was done at NextGen Auto in Closter, NJ

BTSRT · 02-21-2023, 02:00 PM

Sounds amazing. Can you provide a link to the to what you purchased?

-Vanguard- · 02-21-2023, 02:32 PM

DP requires a tune tho and you lose warranty on a 130K car

ferrari6891 · 02-21-2023, 02:36 PM

Quote:

Originally Posted by BTSRT

Sounds amazing. Can you provide a link to the to what you purchased?

Thanks!

I don't have links as my shop handled all of that, but I believe the catless downpipe was from Red Star and the secondary delete was Eurowerks.

johnnyredgtr · 02-21-2023, 02:48 PM

Sounds awesome...what about the CEL light? Any problems driving around or any hipcupp ?

ferrari6891 · 02-21-2023, 02:52 PM

Quote:

Originally Posted by -Vanguard-

DP requires a tune tho and you lose warranty on a 130K car

No performance tune just yet, but in terms of a CEL it was coded out.

ferrari6891 · 02-21-2023, 03:17 PM

Quote:

Originally Posted by johnnyredgtr

Sounds awesome...what about the CEL light? Any problems driving around or any hipcupp ?

No CEL and absolutely flawless so far. Been driving it with this setup for about 6 months now.

Hujan · 02-21-2023, 04:18 PM

Sounds great. Wish there were some good downpipes on the market with HFCs that didn’t throw a CEL.

johnnyredgtr · 02-21-2023, 04:26 PM

Quote:

Originally Posted by ferrari6891

No CEL and absolutely flawless so far. Been driving it with this setup for about 6 months now.

Sweet

AUSX5M · 02-26-2023, 05:33 PM

Quote:

Originally Posted by ferrari6891

No performance tune just yet, but in terms of a CEL it was coded out.

How’d they code it out, my tuner advised your exact setup.

ferrari6891 · 02-26-2023, 06:08 PM

Quote:

Originally Posted by AUSX5M

How’d they code it out, my tuner advised your exact setup.

I believe it was with a cat sensor spacer

bellabimmer · 03-06-2023, 05:52 PM

So you are full downpipe both cats first and second removed but other part of exhaust is all stock ?

If you can confirm this if I understand your post correct - show any other videos while moving and do you have exhaust drone inside ?

AUSX5M · 03-06-2023, 07:05 PM

Quote:

Originally Posted by ferrari6891

I believe it was with a cat sensor spacer

Have you got any further information on this, the akropovic dealer here and my tuner both advises they’ve never heard of this.

weinerbarn · 03-06-2023, 08:23 PM

Quote:

Originally Posted by AUSX5M

Have you got any further information on this, the akropovic dealer here and my tuner both advises they’ve never heard of this.

Could be something like this.

https://www.leib-engineering.de/LEIB...eries-G-series

AUSX5M · 03-08-2023, 02:00 AM

Quote:

Originally Posted by weinerbarn

Could be something like this.

https://www.leib-engineering.de/LEIB...eries-G-series

Thanks mate, have emailed them to see if they do them for the x5m. Haven’t heard back yet.

GotBeemed · 03-08-2023, 03:56 AM

Quote:

Originally Posted by ferrari6891

I believe it was with a cat sensor spacer

Ok, so to clarify and ((not giving you a hard time)), the shop that installed this for you did NOT code anything into the car. Instead, they use the trick of fooling the system by physically spacing the O2 sensor away from the downpipe using a standard washer. Correct?

I have been told for many moons that this method can cause mixed results as many on here would attest to.

GotBeemed · 03-08-2023, 04:00 AM

Quote:

Originally Posted by AUSX5M

Thanks mate, have emailed them to see if they do them for the x5m. Haven’t heard back yet.

I too am very interested in this as well. It would be great if you could provide us in detail what they say about specifically what it does as well. For example, if it just eliminates the CEL for the Upper Catalytic Converter removal or MORE.

Thanks, Mate!

AUSX5M · 03-08-2023, 04:55 AM

Quote:

Originally Posted by GotBeemed

I too am very interested in this as well. It would be great if you could provide us in detail what they say about specifically what it does as well. For example, if it just eliminates the CEL for the Upper Catalytic Converter removal or MORE.

Thanks, Mate!

Will let you know as soon as I do

Cobra_X5MC · 03-08-2023, 01:54 PM

also interested in hearing what they did as well. got a set of redstar catless downpipes sitting in my garage. just don't want a CEL

GotBeemed · 03-09-2023, 06:43 AM

Quote:

Originally Posted by AUSX5M

Thanks mate, have emailed them to see if they do them for the x5m. Haven’t heard back yet.

No word yet?

Hit_Apex · 03-09-2023, 11:33 AM

O2 sensor spacers are not model specific but you do need to verify that the downpipe bung is located to allow room in your application for the spacer/min cat. There are straight and angled versions to accomodate.
http://www.bigdaddiesgarage.com/

GotBeemed · 03-09-2023, 08:24 PM

Quote:

Originally Posted by Hit_Apex

O2 sensor spacers are not model specific but you do need to verify that the downpipe bung is located to allow room in your application for the spacer/min cat. There are straight and angled versions to accomodate.
http://www.bigdaddiesgarage.com/

Interesting. Have you personally used this on your X5M? I am guessing not.

02-21-2023, 01:35 PM	#1
ferrari6891 the original brown guy 116 Rep 1,011 Posts Drives: '22 MBB/SO X5M Comp Join Date: Jan 2008 Location: NJ/NYC iTrader: (3) Garage List 2011.75 E90 M3 [7.66]	VID: X5MC Downpipe + Secondary Cat Delete. Featured on BIMMERPOST.com As we all know, the stock exhaust sound is just waaaaay too muted. I did a downpipe and secondary cat delete and left the rear section OEM with the valves. I just missed the initial engine tun-on, but what you hear in the beginning is the cold start. There's 2 revs during cold start and then the last rev is after cold start ends. Thoughts: I think it's the perfect balance for someone who doesn't want the extreme loudness of a full exhaust system. With that being said, it absolutely roars when you get on it, but quiet when driving relaxed or leaving someones house late at night. Cabin noise is also really balanced and you can hear the turbos spool up much louder and faster! All work was done at NextGen Auto in Closter, NJ __________________ PREVIOUS 2019 G05 X5 M50 AG/BLK 2017 F15 X5 5.0 M Sport AW/BLK 2011 E90 ///M3 AW/FR 2008 E92 ///M3 IB/BLK Last edited by ferrari6891; 02-21-2023 at 01:47 PM..
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02-21-2023, 02:00 PM	#2
BTSRT Enlisted Member 17 Rep 34 Posts Drives: 2021 BMW X5m Join Date: Sep 2022 Location: Grimes, Iowa iTrader: (0)	Sounds amazing. Can you provide a link to the to what you purchased?
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02-21-2023, 02:32 PM	#3
-Vanguard- Lieutenant Colonel 1178 Rep 1,502 Posts Drives: 2021 X6M Competition Join Date: Dec 2020 Location: NY iTrader: (0)	DP requires a tune tho and you lose warranty on a 130K car
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02-21-2023, 02:48 PM	#5
johnnyredgtr Second Lieutenant 121 Rep 250 Posts Drives: 2022 BMW X6MC Join Date: Aug 2017 Location: Puerto Rico iTrader: (0)	Sounds awesome...what about the CEL light? Any problems driving around or any hipcupp ? __________________ 2022 X6MC Donington Grey Metallic/ Sakhir Orange
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02-21-2023, 04:18 PM	#8
Hujan Brigadier General 569 Rep 3,742 Posts Drives: M3 Join Date: Apr 2013 Location: . iTrader: (16)	Sounds great. Wish there were some good downpipes on the market with HFCs that didn’t throw a CEL.
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03-06-2023, 05:52 PM	#12
bellabimmer Private First Class 91 Rep 197 Posts Drives: BMW X5M F95 Join Date: Apr 2021 Location: EU iTrader: (0)	So you are full downpipe both cats first and second removed but other part of exhaust is all stock ? If you can confirm this if I understand your post correct - show any other videos while moving and do you have exhaust drone inside ?
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03-08-2023, 01:54 PM	#19
Cobra_X5MC Private 129 Rep 94 Posts Drives: 2016 Lexus GS-F, 2022 X5M Comp Join Date: Feb 2022 Location: Houston, TX iTrader: (0)	also interested in hearing what they did as well. got a set of redstar catless downpipes sitting in my garage. just don't want a CEL __________________ 2022 BMW X5M Competition Marina Bay Blue/Silverstone, Full Car PPF & Ceramic Coating, Exoshield WPF, Forged Vossen EVO 5 in Bronzino, Full RW Carbon Fiber Kit, Carbon Seat Backs, M Performance Carbon Tips, Redstar Primary & Secondary Catless Downpipes, Dinan Carbon Fiber Intake, Dinan Stage 1 Tune
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03-09-2023, 11:33 AM	#21
Hit_Apex Riding the knock sensor 2369 Rep 1,591 Posts Drives: 21 X5MC \| 23 M4CSL Join Date: May 2008 Location: PCH iTrader: (1) Garage List 2021 BMW X5MC [0.00]	O2 sensor spacers are not model specific but you do need to verify that the downpipe bung is located to allow room in your application for the spacer/min cat. There are straight and angled versions to accomodate. http://www.bigdaddiesgarage.com/ __________________
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