Cold starts - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Armin93 · 04-24-2017, 02:07 AM

My cold starts sound like this (

) its annoying
How do i fix it ?
Setup: greddy sp elite axle back
Uel psr headers and overpipe
Stock front pipe and mid pipe and tuned with brzedit
I have purchased a dual resonated hks front pipe but havent put it on the car yet

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steve99 · 04-24-2017, 02:38 AM

Quote:

Originally Posted by Armin93

My cold starts sound like this (

) its annoying
How do i fix it ?
Setup: greddy sp elite axle back
Uel psr headers and overpipe
Stock front pipe and mid pipe and tuned with brzedit
I have purchased a dual resonated hks front pipe but havent put it on the car yet

Sent from my iPhone using Tapatalk

Easy, to. Tune out cold starts

Maf offset after start
Post start ignition timing
Reduce post strt ilde speeds
Disable post start ignition cel

steve99 · 04-24-2017, 04:12 AM

Duel resonated front pipe will likely be louder than stock front pipe unfortunatly

Armin93 · 04-24-2017, 04:16 AM

I dont really care if gets louder
I just want it to have a nicer tone to it
Like no rasp or very little

Sent from my iPhone using Tapatalk

dhuang · 04-24-2017, 12:40 PM

Tune it out!

Follow the same instructions that steve99 posted -- There's more info in this thread, which is what I used to tune mine out.

Here's the difference it makes on my car...

----- Before -----

[ame="https://www.youtube.com/watch?v=sbrWfXa_qmQ"]Scion FR-S Borla UEL / FT86 SpeedFactory V1 Cold Start - YouTube[/ame]

----- After -----

[ame="https://www.youtube.com/watch?v=8rrfXthK_dc"]Scion FR-S Cold Start "Quiet" Tune - YouTube[/ame]

D_Thissen · 04-24-2017, 12:52 PM

The reason these cars have loud cold starts is because they retard timing (among other things) after start to heat up the cats quickly. When you have a catless header, most tunes don't change the post start timing which is what causes the rasp. As @steve99 said, you can tune out most of the bark.
My car, for example, has a Borla UEL, stock op/fp, Invidia midpipe and a Vibrant muffler.
[ame="https://www.youtube.com/watch?v=7huYEHd37YE"]FRS Coldstart - YouTube[/ame]

Armin93 · 04-24-2017, 12:53 PM

My tuner told me he tried to eliminate the loud cold start as much as he could
Should i tell him the problem? Or do i need a complete retune

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Tcoat · 04-24-2017, 01:22 PM

Quote:

Originally Posted by Armin93

My tuner told me he tried to eliminate the loud cold start as much as he could
Should i tell him the problem? Or do i need a complete retune

Sent from my iPhone using Tapatalk

Get the new front pipe installed and then see what you think. Not much sense worrying about the current set up just to add a piece later.

steve99 · 04-24-2017, 05:54 PM

Quote:

Originally Posted by Armin93

My tuner told me he tried to eliminate the loud cold start as much as he could
Should i tell him the problem? Or do i need a complete retune

Sent from my iPhone using Tapatalk

Get tuner to make these changes and reflash id even go to max base idle speed of 1200 instead of 1400. If you dont alter the Maf offset after start tables car will continue to idle fast at startup. These changes wont effect rest of tune ust startup, but you would ned to reflash

Armin93 · 04-24-2017, 08:26 PM

Quote:

Originally Posted by Tcoat

Get the new front pipe installed and then see what you think. Not much sense worrying about the current set up just to add a piece later.

If i put the new fromtpipe on the car will have no cats thats what i'm worried about
Not sure if many people are running completely catless

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Tcoat · 04-24-2017, 08:44 PM

Quote:

Originally Posted by Armin93

If i put the new fromtpipe on the car will have no cats thats what i'm worried about
Not sure if many people are running completely catless

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Loads and loads and loads of them are.
Just saying there is no point trying to tune out a sound and then change the exhaust again. Finish the exhaust. See how it sounds. Then work on tuning out the cold start noise.

humfrz · 04-24-2017, 09:19 PM

Quote:

Originally Posted by Armin93

If i put the new fromtpipe on the car will have no cats thats what i'm worried about
Not sure if many people are running completely catless

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I reckon any worries would be complying with any local vehicle emission standards.

The car don't care .....

humfrz

Trust86 · 04-24-2017, 10:35 PM

The hks dual resonated is going to be louder than OEM. If you want a catless front pipe, and for it not to be loud, should have went with the fujitsubo dual resonated front pipe.

ajcarson11 · 04-25-2017, 08:40 AM

Heads up: Any after-market front pipe will be louder and introduce more rasp than stock.

Also: If you run catless your cold starts with be even more obnoxious. The cold-start reduction tuning does help significantly though.

04-24-2017, 02:07 AM	#1
Armin93 Member Join Date: Feb 2017 Drives: Toyota 86 GTS Location: Sydney NSW Posts: 30 Thanks: 2 Thanked 5 Times in 2 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Cold starts My cold starts sound like this ( ) its annoying How do i fix it ? Setup: greddy sp elite axle back Uel psr headers and overpipe Stock front pipe and mid pipe and tuned with brzedit I have purchased a dual resonated hks front pipe but havent put it on the car yet Sent from my iPhone using Tapatalk

04-24-2017, 12:52 PM	#6
D_Thissen Senior Member Join Date: Jan 2014 Drives: '13 Argento FR-S (Sold) Location: Ontario Posts: 2,126 Thanks: 3,209 Thanked 1,439 Times in 855 Posts Mentioned: 19 Post(s) Tagged: 2 Thread(s)	The reason these cars have loud cold starts is because they retard timing (among other things) after start to heat up the cats quickly. When you have a catless header, most tunes don't change the post start timing which is what causes the rasp. As @steve99 said, you can tune out most of the bark. My car, for example, has a Borla UEL, stock op/fp, Invidia midpipe and a Vibrant muffler. [ame="https://www.youtube.com/watch?v=7huYEHd37YE"]FRS Coldstart - YouTube[/ame] __________________ My FR-S Build IG: dthissen

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04-24-2017, 04:12 AM	#3
steve99 Banned Join Date: Dec 2013 Drives: FT86 Location: Australia Posts: 7,998 Thanks: 1,035 Thanked 4,987 Times in 2,981 Posts Mentioned: 598 Post(s) Tagged: 2 Thread(s)	Duel resonated front pipe will likely be louder than stock front pipe unfortunatly

04-24-2017, 04:16 AM	#4
Armin93 Member Join Date: Feb 2017 Drives: Toyota 86 GTS Location: Sydney NSW Posts: 30 Thanks: 2 Thanked 5 Times in 2 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I dont really care if gets louder I just want it to have a nicer tone to it Like no rasp or very little Sent from my iPhone using Tapatalk

04-24-2017, 12:40 PM	#5
dhuang Cannonball Record Guy Join Date: Jul 2012 Drives: Series.Yellow, 4C, Fit Location: Houston / Atlanta Posts: 493 Thanks: 480 Thanked 429 Times in 223 Posts Mentioned: 8 Post(s) Tagged: 2 Thread(s)	Tune it out! Follow the same instructions that steve99 posted -- There's more info in this thread, which is what I used to tune mine out. Here's the difference it makes on my car... ----- Before ----- [ame="https://www.youtube.com/watch?v=sbrWfXa_qmQ"]Scion FR-S Borla UEL / FT86 SpeedFactory V1 Cold Start - YouTube[/ame] ----- After ----- [ame="https://www.youtube.com/watch?v=8rrfXthK_dc"]Scion FR-S Cold Start "Quiet" Tune - YouTube[/ame]

04-24-2017, 12:53 PM	#7
Armin93 Member Join Date: Feb 2017 Drives: Toyota 86 GTS Location: Sydney NSW Posts: 30 Thanks: 2 Thanked 5 Times in 2 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	My tuner told me he tried to eliminate the loud cold start as much as he could Should i tell him the problem? Or do i need a complete retune Sent from my iPhone using Tapatalk

04-24-2017, 10:35 PM	#13
Trust86 Senior Member Join Date: Sep 2015 Drives: 2016 Halo FRS Location: US Posts: 414 Thanks: 290 Thanked 161 Times in 106 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	The hks dual resonated is going to be louder than OEM. If you want a catless front pipe, and for it not to be loud, should have went with the fujitsubo dual resonated front pipe.

04-25-2017, 08:40 AM	#14
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)	Heads up: Any after-market front pipe will be louder and introduce more rasp than stock. Also: If you run catless your cold starts with be even more obnoxious. The cold-start reduction tuning does help significantly though.

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