Resonator and second cat removal for $110 on N26

Stevepr · 04-22-2020, 08:14 AM

Sounds like a good deal to remove the resonator and the secondary catalyst for $110...

Will sound really improve a whole lot? Worth it?

Will it set off any sensors? Don't think so.

bmwchue · 04-22-2020, 09:42 AM

Quote:

Originally Posted by Stevepr

Sounds like a good deal to remove the resonator and the secondary catalyst for $110...

Will sound really improve a whole lot? Worth it?

Will it set off any sensors? Don't think so.

I would keep the resonator.

Stevepr · 04-22-2020, 11:47 AM

Quote:

Originally Posted by bmwchue

Quote:

Originally Posted by Stevepr

Sounds like a good deal to remove the resonator and the secondary catalyst for $110...

Will sound really improve a whole lot? Worth it?

Will it set off any sensors? Don't think so.

I would keep the resonator.

Why? To loud? Drone?

Jayden_F87 · 04-22-2020, 01:01 PM

Delete the 2nd cat and leave the res on. Sounds cleaner with resonators in my opinion. But if you don't have a crackle tune and want more pops stock, removing the resonator and 2nd cat would certainly help.

Stevepr · 04-24-2020, 05:11 AM

I would say it's not loud at all, zero pops and it just gave the N26 a little more attitude, but nothing much. Still worth it.

GreenF30N26 · 04-24-2020, 08:46 AM

Nice. I want to do a secondary cat delete but am waiting for a bit. Do you think that bend will create a restriction point for your exhaust flow? Looks like it’s shrinks the diameter of the pipe a bit.

Stevepr · 04-24-2020, 08:23 PM

Quote:

Originally Posted by Green33

Nice. I want to do a secondary cat delete but am waiting for a bit. Do you think that bend will create a restriction point for your exhaust flow? Looks like it’s shrinks the diameter of the pipe a bit.

Quote:

Originally Posted by Green33

Nice. I want to do a secondary cat delete but am waiting for a bit. Do you think that bend will create a restriction point for your exhaust flow? Looks like it's shrinks the diameter of the pipe a bit.

No more than the second cat

CandyRedRC46 · 04-29-2020, 08:43 PM

Lol oof that crimp. You probably lost more power than you gained 🤣

sqwinny · 04-30-2020, 09:22 AM

lose 1 cat, keep the resonator. that crimp can be fixed by ordering a 45-degree mandrel bent pipe off eBay. Thats all you need, and you'll sound the same as a 328i n20

Stevepr · 05-05-2020, 06:45 PM

Quote:

Originally Posted by GreenF30N26

Nice. I want to do a secondary cat delete but am waiting for a bit. Do you think that bend will create a restriction point for your exhaust flow? Looks like it’s shrinks the diameter of the pipe a bit.

Quote:

Originally Posted by GreenF30N26

Nice. I want to do a secondary cat delete but am waiting for a bit. Do you think that bend will create a restriction point for your exhaust flow? Looks like it's shrinks the diameter of the pipe a bit.

The diameter is still the same, the cat did this odd angle, it should flow better than with the CAT

Stevepr · 05-05-2020, 06:46 PM

Quote:

Originally Posted by sqwinny

lose 1 cat, keep the resonator. that crimp can be fixed by ordering a 45-degree mandrel bent pipe off eBay. Thats all you need, and you'll sound the same as a 328i n20

Quote:

Originally Posted by GreenF30N26

Nice. I want to do a secondary cat delete but am waiting for a bit. Do you think that bend will create a restriction point for your exhaust flow? Looks like it's shrinks the diameter of the pipe a bit.

Thanks, Like this?

https://www.ebay.com/itm/401956818755

sqwinny · 05-05-2020, 07:40 PM

there you go. I don't think the n26 exhaust diameter is 3" but you can make it work at your exhaust shop

GreenF30N26 · 05-05-2020, 07:44 PM

Quote:

Originally Posted by Stevepr

The diameter is still the same, the cat did this odd angle, it should flow better than with the CAT

Hard to say what the diameter of the bend is if they manually bent it. Is it a 3” pipe they used and just did the crimp there? If so you might be ok as you would get back to roughly 2.5” inside. Ya I get the cat had a bend as well but it didn’t shrink the throughput size. Just had the cats to clean up the exhaust as it came through. Obviously no way to tell for sure what’s better. Hope it serves you well.

Gen13 F36 · 05-06-2020, 01:42 AM

Quote:

Originally Posted by CandyRedRC46

Lol oof that crimp. You probably lost more pore than you gained 🤣

I saw that on one of the Superman movie.

Stevepr · 05-06-2020, 03:01 PM

Quote:

Originally Posted by sqwinny

there you go. I don't think the n26 exhaust diameter is 3" but you can make it work at your exhaust shop

Does anyone know what is the diameter, I never realized the crimping was a problem, so I am going back to the muffler shop, but want to bring my own 45 degree pipe.

GreenF30N26 · 05-23-2020, 08:35 PM

Just got my 2nd cat removed. They used an oval 3" mandrel 45 degree then an oval to standard pipe to connect towards the resonator. Paid a little more than others were quoting but it's clean AF!

04-22-2020, 08:14 AM	#1
Stevepr Private 11 Rep 56 Posts Drives: F32, 428i Join Date: Jun 2019 Location: Virginia iTrader: (0)	Resonator and second cat removal for $110 on N26 Sounds like a good deal to remove the resonator and the secondary catalyst for $110... Will sound really improve a whole lot? Worth it? Will it set off any sensors? Don't think so.
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04-22-2020, 01:01 PM	#4
Jayden_F87 '20 M2 Comp. 902 Rep 182 Posts Drives: '20 M2 Competition DCT Join Date: May 2019 Location: Socal -> South Korea iTrader: (0) Garage List 2020 BMW M2 Competi ... [7.00]	Delete the 2nd cat and leave the res on. Sounds cleaner with resonators in my opinion. But if you don't have a crackle tune and want more pops stock, removing the resonator and 2nd cat would certainly help. __________________ '20 BSM M2 Competition DCT IG: @porky_m2c
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04-24-2020, 05:11 AM	#5
Stevepr Private 11 Rep 56 Posts Drives: F32, 428i Join Date: Jun 2019 Location: Virginia iTrader: (0)	I would say it's not loud at all, zero pops and it just gave the N26 a little more attitude, but nothing much. Still worth it. Attached Images
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04-24-2020, 08:46 AM	#6
GreenF30N26 Lieutenant 153 Rep 414 Posts Drives: F30 328ix N26 Join Date: Mar 2019 Location: canada iTrader: (0)	Nice. I want to do a secondary cat delete but am waiting for a bit. Do you think that bend will create a restriction point for your exhaust flow? Looks like it’s shrinks the diameter of the pipe a bit.
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04-29-2020, 08:43 PM	#8
CandyRedRC46 Lieutenant 242 Rep 420 Posts Drives: 2013 328i Join Date: Feb 2018 Location: Florida iTrader: (0)	Lol oof that crimp. You probably lost more power than you gained 🤣 Last edited by CandyRedRC46; 05-25-2020 at 10:00 AM..
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04-30-2020, 09:22 AM	#9
sqwinny Major 473 Rep 1,060 Posts Drives: 2013 6MT 328i M Sport Join Date: Mar 2019 Location: Miami iTrader: (3)	lose 1 cat, keep the resonator. that crimp can be fixed by ordering a 45-degree mandrel bent pipe off eBay. Thats all you need, and you'll sound the same as a 328i n20
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05-05-2020, 07:40 PM	#12
sqwinny Major 473 Rep 1,060 Posts Drives: 2013 6MT 328i M Sport Join Date: Mar 2019 Location: Miami iTrader: (3)	there you go. I don't think the n26 exhaust diameter is 3" but you can make it work at your exhaust shop
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05-23-2020, 08:35 PM	#16
GreenF30N26 Lieutenant 153 Rep 414 Posts Drives: F30 328ix N26 Join Date: Mar 2019 Location: canada iTrader: (0)	Just got my 2nd cat removed. They used an oval 3" mandrel 45 degree then an oval to standard pipe to connect towards the resonator. Paid a little more than others were quoting but it's clean AF! Attached Images __________________ 328ix 8AT Sport Line N26 \| Navardi Custom Stage 2 93 \| xHP Stage 3 \| VRSF 5" HD FMIC \| ER CP \| ER Catted DP CTC \| aFe Pro Dry S \| MST Turbo Inlet \| TMS Upper Air Intake Tube \| 2nd Cat X \| GFB DV+ \|
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