Cold Start Exhaust Volume - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

SilentMike · 04-04-2013, 07:12 AM

Now that there are numerous aftermarket exhausts available for the twins, let me ask a question. Are there any axel-backs out there that offer no drone, a nice sound when you get on it, but a cold start volume similar to the stock exhaust? I leave for work while the rest of my household is still dreaming. I had a Nameless offset for a while, and loved the sound except for the cold start. We have a drive-under garage, and when I'd fire up my FR-S to leave for work, it shook pictures on the walls upstairs.

Thanks,

SilentMike

ft_sjo · 04-04-2013, 07:26 AM

It's highly unlikely. The loud exhaust is due to the cat warm-up strategy. Highly retarded ignition, an open throttle and appropriate fuelling makes that 'angry' noise.

SilentMike · 04-04-2013, 07:34 AM

Quote:

Originally Posted by ft_sjo

It's highly unlikely. The loud exhaust is due to the cat warm-up strategy. Highly retarded ignition, an open throttle and appropriate fuelling makes that 'angry' noise.

Yeah, that's my fear that anything that will sound good on the street will also bark on startup. I myself dig the sound. My sleeping wife and five year old, not so much.

ft_sjo · 04-04-2013, 08:32 AM

Perhaps you could speak to one of the tuning wizards on here and get them to write you a custom warm-up strategy which isn't so aggressive. It's only there to light the cat up as quickly as possible to meet emissions regulations for new vehicles.

Surely the gurus like of @Visconti can do this?

SilentMike · 04-04-2013, 08:37 AM

Quote:

Originally Posted by ft_sjo

Perhaps you could speak to one of the tuning wizards on here and get them to write you a custom warm-up strategy which isn't so aggressive. It's only there to light the cat up as quickly as possible to meet emissions regulations for new vehicles.

Surely the gurus like of @Visconti can do this?

Now that's an interesting idea! I should be receiving my EcuTek package from MotoEast in the next couple of days. Once I get it up and working on my mostly stock (Apexi filter) FR-S, I might have to ask them about that.

Thanks for the idea!

SilentMike

2forme · 04-04-2013, 08:41 AM

I find your screen name ironic for the topic

In other news, I've talked to Visconti. He said startup won't be touched.

ft_sjo · 04-04-2013, 09:05 AM

Quote:

Originally Posted by 2forme

I find your screen name ironic for the topic

In other news, I've talked to Visconti. He said startup won't be touched.

Did he say why? Perhaps EcuTek haven't located those tables/strategy? Perhaps he's not comfortable doing it? Some other reason?

2forme · 04-04-2013, 09:10 AM

Quote:

Originally Posted by ft_sjo

Did he say why? Perhaps EcuTek haven't located those tables/strategy? Perhaps he's not comfortable doing it? Some other reason?

No, it was a question in passing a while ago. I do notice that it's different between E85 and 93 maps.

DJCarbine · 04-04-2013, 10:34 AM

I have an Invidia Q300, and the cold start is fairly quiet. My driveway is between my house and the neighbors, with maybe 3 feet on either side. Its not as quiet as a stock exhaust, but its not going to bother anyone on a cold start.

FR-S Matt · 04-04-2013, 10:39 AM

The startup on the Nameless Offset Axleback with the 5" mufflers is even pretty loud and that is a mellow system by itself. Super quiet idle once warm. I think the only solution is stock or something really quiet like a Q300.

was385 · 04-04-2013, 10:41 AM

I just make sure I'm ready to throw it into gear and get moving quickly.

Foobar · 04-04-2013, 11:01 AM

I've had both the GReddy EVO3 non-silenced catback, and now the Perrin Overpipe/catted frontpipe/non-resonated catback, and startup growl on both are pretty loud and annoying (I leave before the crack of dawn as well, I'm sure my neighbors love me).

When it was just the Perrin non-resonated catback, it wasn't too bad - pretty close to stock.

vtmike · 04-04-2013, 11:06 AM

Most garages are sloped away from the house. Have you tried putting it in neutral and letting it roll out of the garage before starting the car?

Sent from my Galaxy Nexus using Tapatalk 2

DarkSunrise · 04-04-2013, 11:26 AM

I've got the same issue with my Perrin non-resonated and my garage. I leave at 7am for work and my fiancee thinks it'll wake up the neighbors. From inside the car, it doesn't sound too loud, but from outside the car, the garage seems to amplify the cold-start.

If no tuner has a solution for this, I may have to switch to a resonated midpipe.

04-04-2013, 07:12 AM	#1
SilentMike Senior Member Join Date: Dec 2011 Drives: 2013 FR-S 6MT Asphalt Location: Alpharetta, GA Posts: 115 Thanks: 9 Thanked 24 Times in 18 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Cold Start Exhaust Volume Now that there are numerous aftermarket exhausts available for the twins, let me ask a question. Are there any axel-backs out there that offer no drone, a nice sound when you get on it, but a cold start volume similar to the stock exhaust? I leave for work while the rest of my household is still dreaming. I had a Nameless offset for a while, and loved the sound except for the cold start. We have a drive-under garage, and when I'd fire up my FR-S to leave for work, it shook pictures on the walls upstairs. Thanks, SilentMike

04-04-2013, 11:26 AM	#14
DarkSunrise Senior Member Join Date: Apr 2012 Drives: 22 BRZ (Previously 13 FR-S) Location: USA Posts: 5,797 Thanks: 2,186 Thanked 4,243 Times in 2,221 Posts Mentioned: 48 Post(s) Tagged: 2 Thread(s)	I've got the same issue with my Perrin non-resonated and my garage. I leave at 7am for work and my fiancee thinks it'll wake up the neighbors. From inside the car, it doesn't sound too loud, but from outside the car, the garage seems to amplify the cold-start. If no tuner has a solution for this, I may have to switch to a resonated midpipe. __________________ "Never run out of real estate, traction, and ideas at the same time." 2022 BRZ Build 2013 FR-S Build

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04-04-2013, 07:26 AM	#2
ft_sjo Banned Join Date: Oct 2012 Drives: GT86 Location: The Motherland Posts: 1,398 Thanks: 140 Thanked 473 Times in 271 Posts Mentioned: 22 Post(s) Tagged: 0 Thread(s)	It's highly unlikely. The loud exhaust is due to the cat warm-up strategy. Highly retarded ignition, an open throttle and appropriate fuelling makes that 'angry' noise.

04-04-2013, 08:32 AM	#4
ft_sjo Banned Join Date: Oct 2012 Drives: GT86 Location: The Motherland Posts: 1,398 Thanks: 140 Thanked 473 Times in 271 Posts Mentioned: 22 Post(s) Tagged: 0 Thread(s)	Perhaps you could speak to one of the tuning wizards on here and get them to write you a custom warm-up strategy which isn't so aggressive. It's only there to light the cat up as quickly as possible to meet emissions regulations for new vehicles. Surely the gurus like of @Visconti can do this?

04-04-2013, 10:34 AM	#9
DJCarbine Thupercharged Join Date: Mar 2013 Drives: 2013 FR-S Location: La Grange Park, IL. Posts: 1,501 Thanks: 116 Thanked 751 Times in 439 Posts Mentioned: 23 Post(s) Tagged: 0 Thread(s)	I have an Invidia Q300, and the cold start is fairly quiet. My driveway is between my house and the neighbors, with maybe 3 feet on either side. Its not as quiet as a stock exhaust, but its not going to bother anyone on a cold start.

04-04-2013, 10:41 AM	#11
was385 Senior Member Join Date: May 2012 Drives: MT WRB BRZ Limited, 2007 911s Location: CT Posts: 812 Thanks: 218 Thanked 381 Times in 181 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	I just make sure I'm ready to throw it into gear and get moving quickly.

04-04-2013, 11:06 AM	#13
vtmike Senior Member Join Date: Jun 2012 Drives: Scion FR-S Location: Virginia Posts: 477 Thanks: 80 Thanked 134 Times in 103 Posts Mentioned: 13 Post(s) Tagged: 1 Thread(s)	Most garages are sloped away from the house. Have you tried putting it in neutral and letting it roll out of the garage before starting the car? Sent from my Galaxy Nexus using Tapatalk 2

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