Best downpipe with cat?

Nickgom2 · 06-12-2022, 11:58 AM

Looking to upgrade my downpipe on my 17 m240 so i can go stage 2 what do y’all recommend

jLona240 · 06-13-2022, 10:07 AM

I went with Active Autowerke and they guarantee no CEL. Easy install too.

bcwalks2 · 06-13-2022, 11:44 AM

VRSF makes a nice affordable one. If you go catless, you will get a CEL. I have the 200 cell one from VRSF and did initially get a CEL. I have since cleared it and it has been off probably 2 months or so.

Jcoop901 · 06-13-2022, 12:35 PM

I went with the AA catted, and I'm completely satisfied. No CEL, no smell, good throaty rumble combined with my M-performance exhaust. The Stg. II MHD power is very satisfying as well!

Ajowhan · 06-13-2022, 01:16 PM

I went with AA as well and satisfied.

But if you are asking for the best, maybe Fabspeed

WolfGTI · 06-14-2022, 09:16 AM

AA catted DP for 3 years now - zero issues.

NicolaMante · 07-14-2022, 08:28 PM

I chose Active Autowerke because they promise no CEL. also simple to install gartic phone

deathking · 07-15-2022, 04:16 AM

I would recommend looking into AA. I have CG-1 and there’s no guarantee of no CEL. Mine comes on every now and then and has a mild smell. Great upgrade regardless.

06-12-2022, 11:58 AM	#1
Nickgom2 New Member 2 Rep 10 Posts Drives: 2017 bmw m240i Join Date: Mar 2021 Location: CT iTrader: (0)	Best downpipe with cat? Looking to upgrade my downpipe on my 17 m240 so i can go stage 2 what do y’all recommend
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06-13-2022, 10:07 AM	#2
jLona240 Private 30 Rep 54 Posts Drives: 2017 M240i xDrive Join Date: Dec 2021 Location: PA iTrader: (0) Garage List 2017 BMW M240i [9.00]	I went with Active Autowerke and they guarantee no CEL. Easy install too.
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06-13-2022, 11:44 AM	#3
bcwalks2 First Lieutenant 274 Rep 399 Posts Drives: 2016 M235i & 2018 X3 M40i Join Date: Aug 2020 Location: Illinois iTrader: (0)	VRSF makes a nice affordable one. If you go catless, you will get a CEL. I have the 200 cell one from VRSF and did initially get a CEL. I have since cleared it and it has been off probably 2 months or so. __________________ Garage: 2022 Telluride Nightfall 2016 Suzuki DRZ 400 2016 M235i Mineral Gray/Coral Red 2018 X3 M40i Alpine White/Black - SOLD
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06-13-2022, 12:35 PM	#4
Jcoop901 Southern Fried 139 Rep 140 Posts Drives: BMW M240i Join Date: May 2020 Location: TN iTrader: (0) Garage List 2017 BMW M240i [9.00]	I went with the AA catted, and I'm completely satisfied. No CEL, no smell, good throaty rumble combined with my M-performance exhaust. The Stg. II MHD power is very satisfying as well!
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06-13-2022, 01:16 PM	#5
Ajowhan Lieutenant 253 Rep 514 Posts Drives: m240i 'vert Join Date: Feb 2021 Location: CA iTrader: (1)	I went with AA as well and satisfied. But if you are asking for the best, maybe Fabspeed
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06-14-2022, 09:16 AM	#6
WolfGTI Captain 716 Rep 913 Posts Drives: '17 F22,15 E84 M Sport,02 R53 Join Date: Jul 2007 Location: South NJ iTrader: (0) Garage List 2017 BMW M240i [0.00] 2002 MINI Cooper S [0.00] 2015 BMW X1 [0.00]	AA catted DP for 3 years now - zero issues. __________________ Integrated Engineering engine mounts, Dinan CAI, AA catted DP, Remus resonated cat back. Rogue Engineering SSK & transmission mounts, WaveTrac LSD. Ohlins R&T coilovers, Turner monoball thrust arms, F87 LCAs, GC camber plates, Superpro subframe bushings, Megan Racing adj. RCAs, delrin differential bushings. Stoptech BBK 6 piston (f) 4 piston (r).
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07-14-2022, 08:28 PM	#7
NicolaMante Registered 2 Rep 1 Posts Drives: A‑Class&Mercedes‑B Join Date: Jul 2022 Location: US iTrader: (0)	I chose Active Autowerke because they promise no CEL. also simple to install gartic phone
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07-15-2022, 04:16 AM	#8
deathking Private First Class 135 Rep 160 Posts Drives: 2021 M240i / 2017 X3 Join Date: Dec 2020 Location: NY iTrader: (0)	I would recommend looking into AA. I have CG-1 and there’s no guarantee of no CEL. Mine comes on every now and then and has a mild smell. Great upgrade regardless.
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