Break in period for new headers? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

akahenry · 08-05-2014, 10:00 PM

Hey guys! I recently bought a new header (Tomei UEL Header) for the 86. My follow up question is: Is there a "break in" period for the new header? Obviously it'll sound awesome and rumbly but should I drive it slowly to "build" up the carbon in the header? Reason I ask is from doing some prior research when I got my cat back, members would say to let "carbon" build up.

Reaper · 08-05-2014, 10:02 PM

no. but make sure you check the bolts after you heat cycle it a few times.

Shady195 · 08-05-2014, 10:15 PM

Da fuck? First time i've heard of that with a header...

In general i think the muffler "break in" is a buncha bullshit. There is some merit when it comes to mufflers with packing material, as time goes on it does deteriorate would change the sound, however I never experienced it even after a few years.

When it coems to chambered mufflers like flowmasters etc, some say carbon build up changes the tone, I call BS on that having had a flowmaster on my old car for nearly 20-30kmi and it never sounded different to me.

boredom.is.me · 08-05-2014, 10:30 PM

@Shady195 You can call BS if it makes you happy, but there was a definite change in my setup which included a cat, resonator, and a canister style muffler.

I doubt there would be a change if there is no cat, resonator, or muffler.

Reaper · 08-05-2014, 11:04 PM

every exhaust I have ever had on bikes, cars, and trucks all changed sound after the first 500 or so miles.

TjAlmeida · 08-05-2014, 11:11 PM

It should quiet down a bit once it 'breaks' in. Just enjoy and maybe check the bolts after some heat cycles if you experience any exhaust leak symptoms.

raven1231 · 08-05-2014, 11:39 PM

My EVO 3 really changed after carbon build up

Poodles · 08-06-2014, 12:02 AM

Mufflers change sound as they age, but there's no real "break in" process for exhaust components. Bolt it on and go.

08-05-2014, 10:00 PM	#1
akahenry Senior Member Join Date: Jul 2013 Drives: '18 STi Location: Bay Area Posts: 837 Thanks: 1,315 Thanked 201 Times in 155 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Break in period for new headers? Hey guys! I recently bought a new header (Tomei UEL Header) for the 86. My follow up question is: Is there a "break in" period for the new header? Obviously it'll sound awesome and rumbly but should I drive it slowly to "build" up the carbon in the header? Reason I ask is from doing some prior research when I got my cat back, members would say to let "carbon" build up.

08-05-2014, 10:02 PM	#2
Reaper in orbe terrum non visi Join Date: Jan 2014 Drives: violent Location: Mountains Posts: 1,747 Thanks: 279 Thanked 762 Times in 446 Posts Mentioned: 62 Post(s) Tagged: 1 Thread(s)	no. but make sure you check the bolts after you heat cycle it a few times. __________________ I have E85 where there isn't E85, that's my secret. http://www.ft86club.com/forums/showt...t=reaper+build

08-05-2014, 11:04 PM	#5
Reaper in orbe terrum non visi Join Date: Jan 2014 Drives: violent Location: Mountains Posts: 1,747 Thanks: 279 Thanked 762 Times in 446 Posts Mentioned: 62 Post(s) Tagged: 1 Thread(s)	every exhaust I have ever had on bikes, cars, and trucks all changed sound after the first 500 or so miles. __________________ I have E85 where there isn't E85, that's my secret. http://www.ft86club.com/forums/showt...t=reaper+build

08-05-2014, 11:39 PM	#7
raven1231 Senior Member Join Date: Aug 2013 Drives: 2013 Firestorm FR-S, 2016 DGM WRX Location: Cincinnati, Ohio Posts: 4,580 Thanks: 8,264 Thanked 3,118 Times in 1,667 Posts Mentioned: 24 Post(s) Tagged: 1 Thread(s)	My EVO 3 really changed after carbon build up __________________ http://www.ft86club.com/forums/showthread.php?t=59870

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Break in Period	Pegasus	Mechanical Maintenance (Oil, Fluids, Break-In, Servicing)	34	03-23-2014 05:25 AM
Break in period	KonTheory	Mechanical Maintenance (Oil, Fluids, Break-In, Servicing)	10	02-05-2014 01:03 AM
Break in period almost over!	Trmx2	Scion FR-S / Toyota 86 GT86 General Forum	32	11-15-2013 04:07 PM
Break-in period...what's really going on?	CaptainSlow	Mechanical Maintenance (Oil, Fluids, Break-In, Servicing)	23	04-27-2013 02:43 AM
Break-In Period	UriarteMD	Scion FR-S / Toyota 86 GT86 General Forum	10	03-29-2012 04:26 AM

08-05-2014, 10:15 PM	#3
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)	Da fuck? First time i've heard of that with a header... In general i think the muffler "break in" is a buncha bullshit. There is some merit when it comes to mufflers with packing material, as time goes on it does deteriorate would change the sound, however I never experienced it even after a few years. When it coems to chambered mufflers like flowmasters etc, some say carbon build up changes the tone, I call BS on that having had a flowmaster on my old car for nearly 20-30kmi and it never sounded different to me.

08-05-2014, 11:11 PM	#6
TjAlmeida Member Join Date: May 2014 Drives: 2013 FR-S Location: Vancouver, BC Posts: 41 Thanks: 4 Thanked 18 Times in 11 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	It should quiet down a bit once it 'breaks' in. Just enjoy and maybe check the bolts after some heat cycles if you experience any exhaust leak symptoms.

08-06-2014, 12:02 AM	#8
Poodles Senior Member Join Date: Oct 2013 Drives: 2015 Series.Blue Location: Fort Worth, TX Posts: 1,781 Thanks: 88 Thanked 781 Times in 481 Posts Mentioned: 16 Post(s) Tagged: 0 Thread(s)	Mufflers change sound as they age, but there's no real "break in" process for exhaust components. Bolt it on and go.

User Name		Remember Me?
Password