Perrin cat back exhausts
 

Hi guys,
I'm almost certain on getting a Perrin exhaust system.. BUT.. undecided if I should go WITH or WITHOUT the resonator.

I've poured through the video and audio clips; really didn't give much insight.

Was wondering if anyone in Sydney had either one of these fitted to their cars, and if you're kind enough for me to hear it in person.. I'll shout Coffee! :)

Cheers.

(other cat back exhaust brands suggestions welcomed)

I did a quick search around and found the dB figures for the Stock exhaust and the Perrin system.. numbers are numbers and I reckon its still best to hear it in person.

(dB) Stock Resonated Unresonated
Free Rev 88 98 105
3000 rpm 72 79 83
4000 rpm 80 83 89
5000 rpm 82 86 89
Idle 58 65 67
Dyno 98 105.5 108

I would go with a resonator to keep the noise down a touch. A lot of the US systems are way too noisy here and attract way too much unwanted attention.

I have the non-resonated version and love it. Sounds nice inside and outside. It sounds ALOT louder inside the car than it sounds outside of it.

Been on the phone with a couple of Australian distributors and they reckon the ratio of sales between non-resonated and resonated is 1:10

hmm...

Hey !

I also have the UN-resonated CB from CarMods & I reckon it's bloody marvelous ! It completes the car, after about 2,000k's it mellows nicely, got a distinctive Rex like boxer rumble, quiet at freeway speeds & at idle, I love it ! :)

Thanks for the feedback mate.. yea I'm thinking of pulling the trigger on the Un-resonated as well.. from what I've been reading so far, the resonated version almost sounds like the stock exhaust..

Is the sound Inside the car bearable with un-resonated?

ive got the non-resonated, can be a bit noisy / drony on cold startup. Settles down to a comfortable, non offensive volume after about 2mins. No louder at the top end from stock, bit more grumble down low and through the mid rev range

sound of non-resonated perrin catback in cabin
[ame="http://www.youtube.com/watch?v=xtetcOjItmc"]http://www.youtube.com/watch?v=xtetcOjItmc[/ame]

I had the resonated one originally, but I felt it was way to quiet after the initial idle, almost felt stock. I switched to nonresonated recently and it sounds like the resonated one except its got a new growl to it, sounds much better. But if you're going to do header back or even headers in future I suggest resonated, but if you're just doing catback then I would recommend nonres.

I'm not a person to go for obnoxious exhausts, but the nonres is perfect by itself.

Thanks for posting the clip. Its sounds amazing! I'm feeling a bit more comfortable going with the non-resonated now :D

My thoughts exactly Wes! I'm not one to go for really Loud exhausts as well. But since I'm not changing anything more than the catback, I think the non-res version might be the way to go.

is it illegal to have non resonated?

Definitely, you'll love it! :thumbsup:

Depends on noise restrictions in your state. Not having a resonator isn't illegal, per se, but the volume may go over the legal limit in your state.

No, since you're just changing the exhaust and you're retaining a cat. I mean you might get pulled over for having an exhaust altogether if the cop is an ass or if its well over the db limit, but that shouldn't be likely unless you're driving recklessly to catch attention.

It all varies from state to state for noise regulations. Here in VIC you cant go over 90db @ 3/4 RPM band https://epanote2.epa.vic.gov.au/EPA/...$FILE/1031.pdf

Extract from the The Environment Protection Authority (EPA) - New South Wales

Prescribed noise levels for exhaust noise
Exhaust noise from vehicles should not exceed the prescribed noise levels referred to in clause 4 of the Regulation. The levels depend on whether the vehicle is certified to Australian Design Rule (ADR) 83/00 (which came into force progressively from 2005), or to earlier ADRs.
For vehicles certified prior to ADR 83/00, Schedule 1 of the Regulation specifies the prescribed noise levels. For cars built before January 1983, the maximum noise level is 96 decibels and for newer cars the level is 90 decibels.
For vehicles with compliance plate dates after 1 September 2011, the prescribed noise level is the ADR 83/00 signature level plus 5 decibels.

Link -> http://www.infrastructure.gov.au/roa...ent/noise.aspx

Extract of an article from another thread showing dB levels of the Perrin exhausts..

It's fine, yes it isn't dead quiet, depending on the revs it's very bearable and it's also dependent on your right foot :) You can actually drive this car quietly with a light foot, but if you bury it then you will hear it until the revs climb up above 4500 or there abouts where it then tapers off to a light racing growl. Welcome to listen to if in Melb. :)

nice, where abouts in melb are u located?

Update.

Soo.. the wife freaked out when she 'heard' the unresonated one. So I ended up ordering the resonated version. BUT we reached a compromise, and I got the Perrin Front pipe too :thumbup:

Taylors Lakes way !

It will be nicer with the front pipe cos it will be louder than the resonated CBE alone haha !! Xcnlt !

Epic WIN :thumbup:

Are you going to the monster imports meet this weekend? I'd love to hear the perrin in person.

@ZZT86 I'd like to listen to it, if its cool with you whenever youre free

cheers

Sorry guys, not been logging on of late & missed it all :/

I work in Campbellfield & live Taylors Lakes way. Or could catch up somewhere during weekend. PM if you like.

Nice exhaust mate, def sounds better in person, will order one soon.

Thanks

No problemo ! My pleasure pal :)

And remember if you get sick of it you could always swap the pipe for a resonated one & sell the unresonated pipe on the forum or ebay. It does sound nice tho.

Resonated might be bit too quiet for me, un-resonated I think is the go, thanks again:thumbup: