Mid pipes that retain the secondary cat?

apez · 06-23-2024, 07:56 AM

Finally coded out ASD and the car sounds better even stock. No more annoying drone.

Now I would like to investigate resonator delete via a mid pipe, but I would like to retain the secondary cats to retain emissions compliance. I would also like to retain the stock box for now, but to have an optional path to upgrade that as well in the future.

What midpipes have you heard and would you recommend them if retaining secondary cats and stock back box?

Montaver · 06-23-2024, 10:41 AM

Dinan

MASHCT · 06-23-2024, 12:13 PM

Second the Dinan. I bought it - waiting for the MAD axle back exhaust to install everything together. It is an excellent midpipe, killer finishing.

Sleeper · 06-23-2024, 12:22 PM

Possibly AWE? Pretty sure they remain emissions compliant with their system.

NewToM · 06-23-2024, 04:00 PM

I’m in the same boat. Interested in seeing the suggestions.

apez · 06-23-2024, 08:08 PM

I have definitely looked at the Dinan, but I don't read much about it on the forum.

I was under the impression the AWE was full system only.

mike@x-ph.com · 06-24-2024, 11:28 AM

Quote:

Originally Posted by apez

I have definitely looked at the Dinan, but I don't read much about it on the forum.

I was under the impression the AWE was full system only.

AWE keeps the secondary cats

tom @ eas · 06-24-2024, 02:20 PM

Quote:

Originally Posted by apez

Finally coded out ASD and the car sounds better even stock. No more annoying drone.

Now I would like to investigate resonator delete via a mid pipe, but I would like to retain the secondary cats to retain emissions compliance. I would also like to retain the stock box for now, but to have an optional path to upgrade that as well in the future.

What midpipes have you heard and would you recommend them if retaining secondary cats and stock back box?

Both Dinan and AWE keep Secondary Cats. Most often refer to these as "Resonator Deletes" than midpipes.

Feel free to PM me directly, we are authorized retailers for both brands.

06-23-2024, 07:56 AM	#1
apez Lieutenant 764 Rep 504 Posts Drives: BMW G87 M2, F25 X3 Join Date: May 2022 Location: VERMONT iTrader: (1) Garage List 2024 BMW M2 [8.10] 2015 BMW X3 [7.25]	Mid pipes that retain the secondary cat? Finally coded out ASD and the car sounds better even stock. No more annoying drone. Now I would like to investigate resonator delete via a mid pipe, but I would like to retain the secondary cats to retain emissions compliance. I would also like to retain the stock box for now, but to have an optional path to upgrade that as well in the future. What midpipes have you heard and would you recommend them if retaining secondary cats and stock back box?
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06-23-2024, 10:41 AM	#2
Montaver Lieutenant Colonel 2540 Rep 1,807 Posts Drives: G87 M2 & M340i LCI Join Date: Jul 2017 Location: NY iTrader: (0)	Dinan
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06-23-2024, 12:13 PM	#3
MASHCT Captain 1159 Rep 791 Posts Drives: 2024 BMW M2 BSM Join Date: Feb 2016 Location: Bloomfield, CT iTrader: (1)	Second the Dinan. I bought it - waiting for the MAD axle back exhaust to install everything together. It is an excellent midpipe, killer finishing. __________________ 2024 M2 \| BSM \| 6SPD \| Port-Installed M Perf HAS \| MAD Axle-back Exhaust \| MAD CAI with blue filters \| Dinan Midpipe \| Richland Forged RF-GT3R Wheels Brushed Competition Gold & machined face \| AudioControl D-6.1200 Amp & DSP \| CDT Audio ES Gold Fronts & Rear \| Morel BMW-Specific Subwoofers \| Lots of neat interior upgrades!
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06-23-2024, 12:22 PM	#4
Sleeper . 1207 Rep 1,190 Posts Drives: 2023 X5M, 2024 M2, 2006 M3 Join Date: Dec 2011 Location: North iTrader: (1)	Possibly AWE? Pretty sure they remain emissions compliant with their system.
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06-23-2024, 04:00 PM	#5
NewToM Captain 1429 Rep 692 Posts Drives: M2 G87 Brooklyn Grey Join Date: Oct 2023 Location: Ventura County iTrader: (0) Garage List 2024 BMW M2 G87 [9.47]	I’m in the same boat. Interested in seeing the suggestions.
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06-23-2024, 08:08 PM	#6
apez Lieutenant 764 Rep 504 Posts Drives: BMW G87 M2, F25 X3 Join Date: May 2022 Location: VERMONT iTrader: (1) Garage List 2024 BMW M2 [8.10] 2015 BMW X3 [7.25]	I have definitely looked at the Dinan, but I don't read much about it on the forum. I was under the impression the AWE was full system only.
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