Resonated vs. Non-Resonated Perrin Catback
 

I'm trying to decide between resonated and non-resonated for the perrin catback. I want the exhaust to be noticeably louder than stock while sounding good and not being obnoxious. From what I've read the resonated perrin is quiet compared to others which is why i'm looking at the non-resonated. Should I go with resonated or non-resonated.

it depends. do you plan on upgrading the rest of the exhaust system too? if all you want to do is a catback then un-resonated all the way.


if you're planning on doing a header/op/fp/then reosnated would be the smarter move.

I know this question all too well. When I first got my car I ordered the perrin header back non resonated system (before they got rid of the cat Pipe) and it sounded great until I ordered headers that's when it got bad. The rasp was so bad I was embarrassed to drive my car so I ordered the resonated pipe and it sounded so much better. Zero rasp.

Yea i'm just doing a catback. I want it to sound louder than stock but not annoying. I don't want to regret not getting the non-resonated either so i may just do that

Based from my experience lol. I was between those 2 also. I went with the 3in resonated because volume wise it was like the 2.5 unreso just without the rasp. I added headers and things were still great nice bass and all.
Until.
I added front pipe, my neighbours started asking me if I bought a race car. IMHO get the resonated. Unless... Because race car

I'd recommend going resonated with either the 2.5" or 3" system. It'll just help keep the volume down when you upgrade later down the road. I'd recommend going with a catted front pipe and catted header if you decide to change those, it'll help keep the volume down as well. Even catted systems used with an unresonated system can be pretty loud.

I love my 3" Perrin resonated system downstream from the turbo. Plenty of awesome sound.

Don't see a reason to go unresonated, unless you like to be heard everywhere you go

I used to have the resonated mid pipe and it wasn't loud enough for me. It was noticeable louder than stock but not by a lot. I got my hands in a non resonated mid pipe for the perrin CBE and omg did it sound much better. It gave it a more deeper tone.


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Love my non-resonated. When I first installed it the noise level was concerning, but after a few hundred miles it really mellowed out. I'd say the volume level is on the high side of perfect with no rasp (except during cold start) or drone. I don't plan on doing any other exhaust mods though, or I would have gone resonated for sure.

How deep is the sound of the unresonated I want a pretty deep level of noise and somewhat louder than stock. I was going to get a uel header with res to give it a deep sound but I don't know if the unres is pretty deep already in which case I'll just stick with a catback thanks

I get compliments on my 2.5 non resonated all the time.
Hell I've even had several people pull up next to me at stop lights and ask what brand of exhaust I have and tell me it sounds great.

It is definitely a deep throaty sound with no rasp.

FTR I am full stock exhaust except for the catback.

A UEL header will make things significantly louder and more rumbly. It'll also give you a fair amount of power, if you run a tune as well.

If you're even considering upgrading the header, overpipe, and front pipe eventually, I'd get the resonated exhaust.

Check out this review, post #3 has some pretty good recordings:
http://www.ft86club.com/forums/showthread.php?t=16614

Unfortunately the comparison recordings are on a dyno, but it gives a very good idea of the difference in sound between the two. Most YouTube videos recorded with a phone or a GoPro just don't capture the lower frequencies. It's still not going to be quite the same as seeing/feeling it in person though.

I'm planning on doing the 2.5" Catback, resonated. I would really like a Perrin front pipe as well. I'm aware they have been discontinued but does anyone know where I can find one? If I have to, I'd even go with a used one in good shape.

Take Motiv instead or JDL or any other quality stuff. There are plenty of options. Here is my setup for example:
http://www.youtube.com/watch?v=J8tLN...ature=youtu.be

The perrin 3'' resonated sounds great, I chose it over the non-resonated because it has too much rasp

Why did you go with the 3" and not 2.5"? I'm going with a resonator either way but I'm not sure which size. I've heard the 3" is just going to be slightly louder and more raspy? What do you think?

Sorry for the late response, but the reason I choose the 3'' is because I called Perrin and asked about which one to get. I told him I plan to turbo one day and he said the 3'' was the way to go.
And because racecar.

I don't own an FRS/BRZ quite yet, but I am aiming to get one by middle to end of the summer. (have to finish my freshman year of college) I have been looking at the Perrin Catback 2.5" but don't know whether to get Un-Reasonated or Reasonated. Only other exhaust mod planned is an UEL of some sort, no FP/OP. The other responses in this thread seem to be aimed more towards full exhaust set up's where as my plans are only as stated before. Any advice or even sound clips would be tremendous help! Thanks!:thumbup:

Resonated if you are getting a header. Otherwise it's raspy and sounds bad.

Bumping this old thread for opinions. I don't plan on header-back for a while, And i did purchase a perrin catback with both midpipes and a catted front pipe. I can't decide with what combination i want to put on my car. I'd like to be louder, but from what i've seen the resonated catback isn't too much louder than stock.

Edit: also i drive alot on the highway to work, is the non resonated loud on highways?

It depends on which size catback you got. If you got a 3" for sure go resonated. If you have a 2.5" resonated or non resonated both will be OK if you got a catted front pipe, of course the unresonated a little louder.

The 2.5" unresonated isn't that bad on the highway if you have a catted front pipe.

Drove my 2.5 non resonated Perrin catback for 2 years (no other exhaust mods) and loved it.

Definitely not too loud IMO.

I received many compliments on how it sounded.

I have the 3" resonated, love it!

Thanks for the input. I have the 2.5 inch catback. I have the stock front pipe on, and based on what I've heard and read I think I'll be going with the unresonated for now.

Sounds good, if you're looking for the mid pipe, give me a call. I actually have the 3" resonated with a catted 2.5" front pipe and it sounds great.

I actually have both 2.5 inch midpipes and catback. I just wasn't sure which one I wanted to try out first.

@PERRIN_Chris I currently am running a full JDL 3" exhaust setup with catless UEL and it is obnoxiously loud and drones. I am looking to Perrin for a solution as my car is currently unbearable to drive. To quiet things down would you recommend switching to your resonated 3" exhaust or swapping back to the stock exhaust parts and installing your 2.5" resonated exhaust? Either way, I hope to be able to keep the catless header, but reduce the volume and drone.

Does your JDL catback have a resonator? If it does, and it's still too loud, I'd probably go with our 2.5" resonated. Just doing that alone is going to help a lot. If it's still too loud, try switching out the front pipe with stock or a catted one.

If your JDL catback does not have a resonator, then our 3" resonated catback will help a little bit, but it's still going to be loud having no cats at all.

Yes, the JDL catback is resonated. I would assume the 3" piping throughout including the catless header is producing a lot of noise. My only concern would be it being too loud with the 2.5" resonated and catless header as I read on another post. It mentioned to install a downpipe.

i had the perrin unresonated and it was too loud for my tastes. i didnt like it. i then went to the resonated. i guess it comes down to your personal preference. i also have an UEL borla header, which makes things already louder as it is. just imagine unresonated on top of that.