Switching from catless to catted front pipe? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Kaily · 09-09-2015, 12:19 PM

Hi everyone! So I currently have an Invidia catless front pipe and Berk muffler delete. I'm wondering if I switch to a catted front pipe how much difference would that make sound wise and would it really affect anything?

Mr.Impreza · 09-09-2015, 12:21 PM

From what i read, it would make the car much more quiet and eliminate drone if you had any.
Also you would pass emissions in Canada haha....your in Texas, not sure about the law there.
Performance wise, there won't be much of a difference.

Kaily · 09-09-2015, 12:24 PM

Quote:

Originally Posted by Mr.Impreza

From what i read, it would make the car much more quiet and eliminate drone if you had any.
Also you would pass emissions in Canada haha....your in Texas, not sure about the law there.
Performance wise, there won't be much of a difference.

It's legal in Texas, but how much more quiet would it make it?

MokSpeed · 09-09-2015, 12:26 PM

Is your Invidia front pipe resonated? If so then you won't see much of a difference in sound if you switch back to a catted front pipe. There's no point in switching back to a catted front pipe and it wouldn't be worth the drop off in performance you'd experience. If anything get rid of the muffler delete as that's what is making your car so loud.

Mr.Impreza · 09-09-2015, 12:28 PM

Not the best comparison because they have a UEL header which makes the car very loud, but you can somewhat see the difference in noise level between catted and uncatted front pipes.

I'm sure someone else can give you more info on this

[ame="https://www.youtube.com/watch?v=TKa2Am3EMgI"]Borla UEL Header Invidia Catted Front Pipe vs Invidia Catless Front Pipe - Scion FRS and Subaru BRZ - YouTube[/ame]

Kaily · 09-09-2015, 12:29 PM

Quote:

Originally Posted by MokSpeed

Is your Invidia front pipe resonated? If so then you won't see much of a difference in sound if you switch back to a catted front pipe. There's no point in switching back to a catted front pipe and it wouldn't be worth the drop off in performance you'd experience. If anything get rid of the muffler delete as that's what is making your car so loud.

My front pipe isn't resonated either, I would just be getting a new pipe with the converter

MokSpeed · 09-09-2015, 12:31 PM

Go resonated. It will solve your problems without sacrificing power. Just keep in mind the muffler delete is what's causing most of the noise.

Kaily · 09-09-2015, 12:33 PM

Quote:

Originally Posted by MokSpeed

Go resonated. It will solve your problems without sacrificing power. Just keep in mind the muffler delete is what's causing most of the noise.

Okay so I know like nothing about cars lol so forgive me. But what does the resonator do?

Chad11491 · 09-09-2015, 12:39 PM

the resonator kills a lot of the drone and harshness. It's basically a glasspack if i'm not wrong.

Also, UEL headers don't make the car a whole lot louder. Most of the loudness comes from the catback delete and no resonators. When I went from stock + catback (q300) to JDL UEL + Q300 it ways maybe 5-10% louder vs stock. Not a big deal.

MisterSheep · 09-09-2015, 12:40 PM

Quote:

Originally Posted by Kaily

Okay so I know like nothing about cars lol so forgive me. But what does the resonator do?

A resonator is a device they put in car's exhaust pipes to reduce drone and reduce rasp and reduce the noise as well. It doesn't restrict flow as much as a catalytic converter but focuses mostly on sound.
Quick google search..: http://www.ehow.com/about_5765675_ex...esonator_.html
Resonator vs Catalytic Converter: http://www.ehow.com/about_6170978_re...converter.html

Kaily · 09-09-2015, 12:49 PM

Quote:

Originally Posted by MisterSheep

A resonator is a device they put in car's exhaust pipes to reduce drone and reduce rasp and reduce the noise as well. It doesn't restrict flow as much as a catalytic converter but focuses mostly on sound.
Quick google search..: http://www.ehow.com/about_5765675_ex...esonator_.html
Resonator vs Catalytic Converter: http://www.ehow.com/about_6170978_re...converter.html

Okay so from reading those, basically there won't be anything different if I switch to a catted pipe then?

weederr33 · 09-09-2015, 12:51 PM

You could get both in one package and get a nameless front pipe with the cat and a helmholtz resonator

MisterSheep · 09-09-2015, 12:58 PM

Quote:

Originally Posted by Kaily

Okay so from reading those, basically there won't be anything different if I switch to a catted pipe then?

Catted pipe will hurt your peformance as well as reduce noise. A high flow cat wont hurt it as much.

MokSpeed · 09-09-2015, 01:00 PM

^Correct. Should you choose to switch to a catted pipe ensure that it is a high flow cat.

09-09-2015, 12:19 PM	#1
Kaily Member Join Date: Feb 2015 Drives: 2014 Hot Pink FR-S! Location: Texas Posts: 32 Thanks: 38 Thanked 11 Times in 8 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Switching from catless to catted front pipe? Hi everyone! So I currently have an Invidia catless front pipe and Berk muffler delete. I'm wondering if I switch to a catted front pipe how much difference would that make sound wise and would it really affect anything?

09-09-2015, 12:21 PM	#2
Mr.Impreza Mr.Fujitsubo Join Date: Sep 2014 Drives: 2018 STI Location: Woodbridge Posts: 1,719 Thanks: 4,055 Thanked 1,552 Times in 784 Posts Mentioned: 31 Post(s) Tagged: 1 Thread(s)	From what i read, it would make the car much more quiet and eliminate drone if you had any. Also you would pass emissions in Canada haha....your in Texas, not sure about the law there. Performance wise, there won't be much of a difference. __________________ 2018 Subaru WRX STI ~ The Weekend Car ~ 2015 Toyota 86 ~ The Sold Car ~ Build Journal OFT Stage 1 Tune Review

09-09-2015, 12:28 PM	#5
Mr.Impreza Mr.Fujitsubo Join Date: Sep 2014 Drives: 2018 STI Location: Woodbridge Posts: 1,719 Thanks: 4,055 Thanked 1,552 Times in 784 Posts Mentioned: 31 Post(s) Tagged: 1 Thread(s)	Not the best comparison because they have a UEL header which makes the car very loud, but you can somewhat see the difference in noise level between catted and uncatted front pipes. I'm sure someone else can give you more info on this [ame="https://www.youtube.com/watch?v=TKa2Am3EMgI"]Borla UEL Header Invidia Catted Front Pipe vs Invidia Catless Front Pipe - Scion FRS and Subaru BRZ - YouTube[/ame] __________________ 2018 Subaru WRX STI ~ The Weekend Car ~ 2015 Toyota 86 ~ The Sold Car ~ Build Journal OFT Stage 1 Tune Review

09-09-2015, 12:51 PM	#12
weederr33 Airborne at your service Join Date: Sep 2014 Drives: '17 BRZ Series.Yellow Location: El Paso, Texas Posts: 6,420 Thanks: 4,578 Thanked 5,706 Times in 2,992 Posts Mentioned: 33 Post(s) Tagged: 2 Thread(s)	You could get both in one package and get a nameless front pipe with the cat and a helmholtz resonator __________________ Series.Yellowbird - http://www.ft86club.com/forums/showthread.php?t=122135 MS, CSCS, TSAC-F, CPT

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Catted, resonated, or catless front pipe with Perrin Exhaust?	brzbrad	Engine, Exhaust, Transmission	19	07-04-2016 12:44 AM
Invidia Catless and Catted Front Pipe - FT-86 SpeedFactory	FT-86 SpeedFactory	Engine, Exhaust, Transmission	107	03-29-2016 11:48 AM
Sound Clip Request: Catless UEL + Catted Front Pipe + Invidia N1	FR-S Matt	Engine, Exhaust, Transmission	35	11-16-2015 06:27 AM
Catted front pipe or catless with nameless axleback?	daibunjau	Engine, Exhaust, Transmission	1	07-02-2014 09:22 PM
P&L Catted headers and Nameless catted Front pipe. Also is this cricket noise?	Xdragonxb0i	Engine, Exhaust, Transmission	23	04-24-2013 01:29 PM

09-09-2015, 12:26 PM	#4
MokSpeed Granny Shifter Join Date: Apr 2014 Drives: 2014 FR-S Location: United States Posts: 2,094 Thanks: 539 Thanked 1,289 Times in 711 Posts Mentioned: 24 Post(s) Tagged: 0 Thread(s)	Is your Invidia front pipe resonated? If so then you won't see much of a difference in sound if you switch back to a catted front pipe. There's no point in switching back to a catted front pipe and it wouldn't be worth the drop off in performance you'd experience. If anything get rid of the muffler delete as that's what is making your car so loud.

09-09-2015, 12:31 PM	#7
MokSpeed Granny Shifter Join Date: Apr 2014 Drives: 2014 FR-S Location: United States Posts: 2,094 Thanks: 539 Thanked 1,289 Times in 711 Posts Mentioned: 24 Post(s) Tagged: 0 Thread(s)	Go resonated. It will solve your problems without sacrificing power. Just keep in mind the muffler delete is what's causing most of the noise.

09-09-2015, 12:39 PM	#9
Chad11491 Senior Member Join Date: May 2013 Drives: 85.5 Porsche 944, '15 mustang GT PP Location: Duluth, Georgia Posts: 295 Thanks: 116 Thanked 155 Times in 85 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	the resonator kills a lot of the drone and harshness. It's basically a glasspack if i'm not wrong. Also, UEL headers don't make the car a whole lot louder. Most of the loudness comes from the catback delete and no resonators. When I went from stock + catback (q300) to JDL UEL + Q300 it ways maybe 5-10% louder vs stock. Not a big deal.

09-09-2015, 01:00 PM	#14
MokSpeed Granny Shifter Join Date: Apr 2014 Drives: 2014 FR-S Location: United States Posts: 2,094 Thanks: 539 Thanked 1,289 Times in 711 Posts Mentioned: 24 Post(s) Tagged: 0 Thread(s)	^Correct. Should you choose to switch to a catted pipe ensure that it is a high flow cat.

User Name		Remember Me?
Password