18 ZCP secondary cat delete/swap w. Magnaflow 14156

Alan l. · 10-19-2019, 11:34 AM

Initially it’s a stock comp package exhaust with just the resonator mod. I just had MPE tips on. I actually hate how the MPE exhaust sounds. Personal preference.

Beemerm3 · 10-22-2019, 03:53 PM

That sounds really nice. Lots of tone coming out. Without being aggressive.

domino_z · 11-17-2019, 08:12 PM

any aussies following this thread

i have 2 new magnaflow's if anyone wants them

Jerich0 · 02-16-2020, 09:42 PM

Hello Guys...

I see you installed the 4” version of the Magnaflows... could the 6” version fit?

Trevorstein · 02-18-2020, 12:28 PM

Quote:

Originally Posted by theweebabySeamus

And you guys aren't noticing any extra exhaust smell?

Yes!

I did, initially.

Those secondary cat's. must have been doing something otherwise they wouldn't have been there in the first place!

Cheers!

Alan l. · 02-18-2020, 04:26 PM

Quote:

Originally Posted by Jerich0

Hello Guys...

I see you installed the 4” version of the Magnaflows... could the 6” version fit?

You might run into issues because the pipes angles upwards slightly that is hard to see in pics. I mean a good exhaust fabricator can do anything but it wouldn't just be a cut/swap like it was for me.

I didn't notice any additional smell after doing this on my car.

Alan

karlskry · 03-25-2020, 09:11 AM

going to be doing a secondary cat delete soon and can't find any clips of just straight pipes instead of the added resonator- but the general consensus i see here is that the Magnaflow resonators deepen the tone without acting as a "muffler," while straightpipes may be slightly louder but much raspier. is this the correct assumption?

ntg44 · 03-25-2020, 09:27 AM

Quote:

Originally Posted by karlskry

going to be doing a secondary cat delete soon and can't find any clips of just straight pipes instead of the added resonator- but the general consensus i see here is that the Magnaflow resonators deepen the tone without acting as a "muffler," while straightpipes may be slightly louder but much raspier. is this the correct assumption?

In my opinion, the resonators just round out and take a bit off the edge of the raspy tone under boost. It is louder than stock with 2nd cats removed when flooring it, but drones less than stock when cruising if valves are left open. Hard to explain. But I noticed my manual shifter rattles were gone with valves open after the resonator install. Cold start with valves open is ridiculous though.

If you like the stock sound as-is, then just delete the 2nd cats to get more of it. But I was sick of the buzzing sounds when on boost, so this is a really affordable way to get rid that.

karlskry · 03-25-2020, 10:36 AM

The Magnaflow 14156 is now $127 on amazon and $150 each on other sites- ouch! Any luck with any other 2.5" straight through mufflers? If i can find ones that are around ~$90 each i will get them, otherwise i think i will just have my shop fab up straight pipes for the cat delete

jpsimon · 03-25-2020, 11:03 AM

I have two of the magnaflow 14156's in my garage, never installed, if anyone wants to buy them. Shipping will be a little pricy since it'll be a heavy package but still cheaper than buying them off amazon now it seems.

rborane · 03-25-2020, 11:11 AM

Quote:

Originally Posted by karlskry

The Magnaflow 14156 is now $127 on amazon and $150 each on other sites- ouch! Any luck with any other 2.5" straight through mufflers? If i can find ones that are around ~$90 each i will get them, otherwise i think i will just have my shop fab up straight pipes for the cat delete

Vibrant 1792. Check on amazon. Great quality that will accomplish the same thing and fit really well.

karlskry · 03-25-2020, 09:03 PM

Quote:

Originally Posted by rborane

Quote:

Originally Posted by karlskry

The Magnaflow 14156 is now $127 on amazon and $150 each on other sites- ouch! Any luck with any other 2.5" straight through mufflers? If i can find ones that are around ~$90 each i will get them, otherwise i think i will just have my shop fab up straight pipes for the cat delete

Vibrant 1792. Check on amazon. Great quality that will accomplish the same thing and fit really well.

Quote:

Originally Posted by rborane

Quote:

Originally Posted by karlskry

The Magnaflow 14156 is now $127 on amazon and $150 each on other sites- ouch! Any luck with any other 2.5" straight through mufflers? If i can find ones that are around ~$90 each i will get them, otherwise i think i will just have my shop fab up straight pipes for the cat delete

Vibrant 1792. Check on amazon. Great quality that will accomplish the same thing and fit really well.

Are you running these?

Trevorstein · 03-26-2020, 01:51 PM

Quote:

Originally Posted by karlskry

Are you running these?

Hey,

Don't mean to

OP...

All in 304 SS!

Cheers!

karlskry · 03-26-2020, 06:46 PM

Went with the magnaflows courtesy of jpsimon- thanks again!

Now to try and find a shop willing to cut off cats...

GoodtoGo · 03-26-2020, 10:13 PM

Quote:

Originally Posted by karlskry

Quote:

Originally Posted by rborane

Quote:

Originally Posted by karlskry

The Magnaflow 14156 is now $127 on amazon and $150 each on other sites- ouch! Any luck with any other 2.5" straight through mufflers? If i can find ones that are around ~$90 each i will get them, otherwise i think i will just have my shop fab up straight pipes for the cat delete

Vibrant 1792. Check on amazon. Great quality that will accomplish the same thing and fit really well.

Quote:

Originally Posted by rborane

Quote:

Originally Posted by karlskry

The Magnaflow 14156 is now $127 on amazon and $150 each on other sites- ouch! Any luck with any other 2.5" straight through mufflers? If i can find ones that are around ~$90 each i will get them, otherwise i think i will just have my shop fab up straight pipes for the cat delete

Vibrant 1792. Check on amazon. Great quality that will accomplish the same thing and fit really well.

Are you running these?

I'm running these too. Work and sound great. All SS.

karlskry · 03-27-2020, 08:35 AM

^ WOW thats a beautiful welding job!!

maddmatth · 08-15-2020, 01:31 AM

Quote:

Originally Posted by Trevorstein

Hey,

Don't mean to

OP...

All in 304 SS!

Cheers!

Does it sound the same as OPs setup? or do you have a recording? I'm thinking of doing the same.
And what x pipe is that?

Trevorstein · 08-15-2020, 11:37 AM

Quote:

Originally Posted by maddmatth

Does it sound the same as OPs setup? or do you have a recording? I'm thinking of doing the same.
And what x pipe is that?

Hey,

Sounds Great!

For the life of me, I can't get how to upload video files??

Your best bet would be "Racecraft" in Australia!

Cheers!

maddmatth · 08-17-2020, 05:31 AM

Quote:

Originally Posted by Trevorstein

Hey,

Sounds Great!

For the life of me, I can't get how to upload video files??

Your best bet would be "Racecraft" in Australia!

Cheers!

What I'm also curious on... is you are removing the stock resonator, only to add back two resonators.
What's the different in stock resonator vs having the two Vibrant resonators? Is one way deeper/louder?

I'm just wondering how different this will sound compared to just deleting the secondary cats and leaving the stock resonator as-is.

deeldoo · 08-21-2020, 11:01 AM

Has anyone tried this setup with catless DP's?

Trevorstein · 08-24-2020, 01:47 PM

Quote:

Originally Posted by maddmatth

What I'm also curious on... is you are removing the stock resonator, only to add back two resonators.
What's the different in stock resonator vs having the two Vibrant resonators? Is one way deeper/louder?

I'm just wondering how different this will sound compared to just deleting the secondary cats and leaving the stock resonator as-is.

Good question!

The two added back on were to replace the secondary cat's. which are restrictive in a twofold way.

Remember these are not only restrictive due to the Catalytic Convertor function but, they also do
perform a "resonator" function as well.

The positioning may also play a part.

Cheers!

Rocky_D · 10-31-2020, 06:28 AM

Quote:

Originally Posted by Trevorstein

Quote:

Originally Posted by karlskry

Are you running these?

Hey,

Don't mean to

OP...

[img]https://i.ibb.co/g6SwCLF/IMG-20200228-WA0039.jpg[/img]

All in 304 SS!

Cheers!

This is exactly what I am looking to do. I wish we had a sound clip.

How does it sound compared to stock? I'm just looking for a cleaner louder sound. Hopefully this achieves it.

10-19-2019, 11:34 AM	#45
Alan l. Major General 5428 Rep 8,801 Posts Drives: 2020 F95 X5M Competition Join Date: Jun 2009 Location: United States iTrader: (9)	Initially it’s a stock comp package exhaust with just the resonator mod. I just had MPE tips on. I actually hate how the MPE exhaust sounds. Personal preference.
	Appreciate 0 Quote

10-22-2019, 03:53 PM	#46
Beemerm3 First Lieutenant 59 Rep 345 Posts Drives: 16' BMW m3 Join Date: Jul 2019 Location: Sacramento iTrader: (0)	That sounds really nice. Lots of tone coming out. Without being aggressive.
	Appreciate 0 Quote

11-17-2019, 08:12 PM	#47
domino_z Lieutenant Colonel 1232 Rep 1,969 Posts Drives: F-Pace SVR Join Date: Apr 2008 Location: Australia iTrader: (0)	any aussies following this thread i have 2 new magnaflow's if anyone wants them
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02-16-2020, 09:42 PM	#48
Jerich0 Love to Drive 197 Rep 602 Posts Drives: X4 & M4 Join Date: Jul 2009 Location: Around iTrader: (2)	Hello Guys... I see you installed the 4” version of the Magnaflows... could the 6” version fit?
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03-25-2020, 09:11 AM	#51
karlskry Private First Class 40 Rep 157 Posts Drives: 2015 M3 Silverstone/Sakhir Join Date: May 2019 Location: Pittsburgh Pa iTrader: (0)	going to be doing a secondary cat delete soon and can't find any clips of just straight pipes instead of the added resonator- but the general consensus i see here is that the Magnaflow resonators deepen the tone without acting as a "muffler," while straightpipes may be slightly louder but much raspier. is this the correct assumption?
	Appreciate 0 Quote

03-25-2020, 10:36 AM	#53
karlskry Private First Class 40 Rep 157 Posts Drives: 2015 M3 Silverstone/Sakhir Join Date: May 2019 Location: Pittsburgh Pa iTrader: (0)	The Magnaflow 14156 is now $127 on amazon and $150 each on other sites- ouch! Any luck with any other 2.5" straight through mufflers? If i can find ones that are around ~$90 each i will get them, otherwise i think i will just have my shop fab up straight pipes for the cat delete
	Appreciate 0 Quote

03-25-2020, 11:03 AM	#54
jpsimon Team Zissou 3064 Rep 10,197 Posts Drives: 2022 AWD M3 Comp - SMB Join Date: Dec 2006 Location: CT iTrader: (7)	I have two of the magnaflow 14156's in my garage, never installed, if anyone wants to buy them. Shipping will be a little pricy since it'll be a heavy package but still cheaper than buying them off amazon now it seems.
	Appreciate 0 Quote

03-26-2020, 06:46 PM	#58
karlskry Private First Class 40 Rep 157 Posts Drives: 2015 M3 Silverstone/Sakhir Join Date: May 2019 Location: Pittsburgh Pa iTrader: (0)	Went with the magnaflows courtesy of jpsimon- thanks again! Now to try and find a shop willing to cut off cats...
	Appreciate 0 Quote

03-27-2020, 08:35 AM	#60
karlskry Private First Class 40 Rep 157 Posts Drives: 2015 M3 Silverstone/Sakhir Join Date: May 2019 Location: Pittsburgh Pa iTrader: (0)	^ WOW thats a beautiful welding job!!
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08-21-2020, 11:01 AM	#64
deeldoo Captain 1122 Rep 845 Posts Drives: BMW M4 - DCT 2016 Join Date: Nov 2019 Location: Toronto iTrader: (0)	Has anyone tried this setup with catless DP's?
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