How to achieve nice exhaust note in cabin? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

ajcarson11 · 08-12-2015, 02:10 PM

Hello all--

After deleting the sound tube I have noticed a lack of exhaust/engine noise in the cabin. I'd like to modify/add to my exhaust setup in order to gain back some of the noise lost to the sound tube (which sounds very artificial IMO). I would like to do this without making things overly loud outside the car. Does anyone have any thoughts/ideas on how I can achieve this? I'd like to get a similar volume level to the sound tube (maybe more?), while avoiding drone for highway cruising. I'm interested in my own driving pleasure, and am not out to please/terrify neighbors or others on the street.

I've currently got the Gruppes/Tomei UEL header installed with the stock OP/FP/Catback. I've also sound-deadened the entire car, including trunk (which I understand will help with catback drone).

Thanks all!

continuecrushing · 08-12-2015, 02:42 PM

buy an op, fp or catback?

Koa · 08-12-2015, 02:43 PM

catback for sure- don't waste time with an OP/FP if N/A.

mild exhaust setups are aplenty, along with their reviews

ajcarson11 · 08-12-2015, 02:44 PM

Thanks -- What sort of ratio would you say adding on an OP, FP, or CB creates inside/outside the car? If I double the volume on the outside, will I notice it in the cabin? or?

I suppose what I really need to do is find some GT86 owners in my area and demo these things myself.

ajcarson11 · 08-12-2015, 02:46 PM

Quote:

Originally Posted by Koa

catback for sure- don't waste time with an OP/FP if N/A.

mild exhaust setups are aplenty, along with their reviews

Agreed -- And i've done research. I'm concerned about going with something like a Perrin 2.5 (which sounds like it would sound great outside the car) as I don't want to end up with something I can't enjoy on the inside. Reviews on the Perrin 2.5 resonated and Q300 suggest a great mild outside tone, but with little additional tone inside the cabin.

At the same time, I know louder catbacks can be heard inside the car, but with very loud results outside.

Koa · 08-12-2015, 02:48 PM

remember that you have a header up front- the muffling is very much at the backend of the car now. Try and find a friend or member on here around you with a similar setup is my only suggestion, as videos don't translate well- especially inside the cabin!

the FP cat is a minimal contributor in terms of noise reduction.

cdrazic93 · 08-12-2015, 03:02 PM

omg Koa is alive

Shady195 · 08-12-2015, 03:46 PM

Route the exhaust into the trunk space

wbradley · 08-12-2015, 03:56 PM

Play a recording of a Ferrari Enzo with the volume at 50%.

Seriously., do your research and lose the stock cat back.

JD001 · 08-12-2015, 04:31 PM

I found the standard sound rather flat and dull, changed to the following looking for the flat four burble with some character through the rev range ...Tomei Expreme UnEqual Length Exhaust Manifold, Milltek overpipe and Berk front pipe with high flow cat. The remainder is stock UK spec exhaust. The sound is great, got the flat four burble but it's very quiet when cruising.

shifter907 · 08-12-2015, 05:04 PM

I have a catless Ark front pipe with Helmholtz resonator. Kills a lot of the drone while adding a tiny bit of noise.

STV3 · 08-12-2015, 05:13 PM

A set up similar to this should give you a decent in cabin exhaust note...

Turdinator · 08-12-2015, 08:46 PM

OP, if you want the car to stay relatively quiet maybe an intake will suit you better. Or even just a high flow filter, silicon tube and removing the rest of the resonators. During cruise the car will be quiet as stock but under acceleration the induction noise will be louder and more noticeable.

Tcoat · 08-12-2015, 09:37 PM

Quote:

Originally Posted by wbradley

Play a recording of a Ferrari Enzo with the volume at 50%.

Seriously., do your research and lose the stock cat back.

08-12-2015, 02:10 PM	#1
ajcarson11 Senior Member Join Date: Jun 2015 Drives: 2013 Subaru BRZ Limited (Black) Location: Indianapolis Posts: 511 Thanks: 253 Thanked 206 Times in 149 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	How to achieve nice exhaust note in cabin? Hello all-- After deleting the sound tube I have noticed a lack of exhaust/engine noise in the cabin. I'd like to modify/add to my exhaust setup in order to gain back some of the noise lost to the sound tube (which sounds very artificial IMO). I would like to do this without making things overly loud outside the car. Does anyone have any thoughts/ideas on how I can achieve this? I'd like to get a similar volume level to the sound tube (maybe more?), while avoiding drone for highway cruising. I'm interested in my own driving pleasure, and am not out to please/terrify neighbors or others on the street. I've currently got the Gruppes/Tomei UEL header installed with the stock OP/FP/Catback. I've also sound-deadened the entire car, including trunk (which I understand will help with catback drone). Thanks all!

08-12-2015, 03:02 PM	#7
cdrazic93 Junior Join Date: Aug 2013 Drives: a car Location: Probably at school Posts: 4,341 Thanks: 3,184 Thanked 2,512 Times in 1,502 Posts Mentioned: 20 Post(s) Tagged: 0 Thread(s)	omg Koa is alive __________________ "Ah! What music! They could have never imagined, those pioneers who invented the automobile, that it would posses us like this, our imaginations, our dreams. Men love women, but even more than that, men love CARS!"-Lord Hesketh

08-12-2015, 05:04 PM	#11
shifter907 Lurker Join Date: Sep 2014 Drives: '14 BRZ Ltd 6MT Location: Hurlburt Field, FL Posts: 182 Thanks: 484 Thanked 58 Times in 38 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I have a catless Ark front pipe with Helmholtz resonator. Kills a lot of the drone while adding a tiny bit of noise. __________________ Instagram : @brampbell_candon Facebook : Hipster Vision Photography

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08-12-2015, 02:42 PM	#2
continuecrushing Join Date: Mar 2013 Drives: 2013 Firestorm FRS Location: Lake Elsinore, CA Posts: 2,707 Thanks: 1,231 Thanked 2,144 Times in 1,003 Posts Mentioned: 73 Post(s) Tagged: 2 Thread(s)	buy an op, fp or catback?

08-12-2015, 02:44 PM	#4
ajcarson11 Senior Member Join Date: Jun 2015 Drives: 2013 Subaru BRZ Limited (Black) Location: Indianapolis Posts: 511 Thanks: 253 Thanked 206 Times in 149 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Thanks -- What sort of ratio would you say adding on an OP, FP, or CB creates inside/outside the car? If I double the volume on the outside, will I notice it in the cabin? or? I suppose what I really need to do is find some GT86 owners in my area and demo these things myself.

08-12-2015, 03:46 PM	#8
Shady195 Senior Member Join Date: Jun 2014 Drives: '13 10 Series FRS #1203 Location: Albany, NY Posts: 850 Thanks: 7 Thanked 386 Times in 221 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Route the exhaust into the trunk space

08-12-2015, 04:31 PM	#10
JD001 Senior Member Join Date: Apr 2015 Drives: Subaru BRZ Location: UK Posts: 6,257 Thanks: 7,978 Thanked 6,497 Times in 3,636 Posts Mentioned: 26 Post(s) Tagged: 2 Thread(s)	I found the standard sound rather flat and dull, changed to the following looking for the flat four burble with some character through the rev range ...Tomei Expreme UnEqual Length Exhaust Manifold, Milltek overpipe and Berk front pipe with high flow cat. The remainder is stock UK spec exhaust. The sound is great, got the flat four burble but it's very quiet when cruising.

08-12-2015, 05:13 PM	#12
STV3 Señor Member Join Date: May 2013 Drives: 2013 Scion FR-S Location: Rockland County NY Posts: 1,607 Thanks: 1,103 Thanked 1,322 Times in 645 Posts Mentioned: 17 Post(s) Tagged: 4 Thread(s)	A set up similar to this should give you a decent in cabin exhaust note...

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