Your stock exhaust manifold revealed - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

WNDSRFR · 04-18-2014, 02:02 PM

I recently installed the Open Flash Header on my car and thought I would share these photos.

This is the lump as it comes off the car.

WNDSRFR · 04-18-2014, 02:05 PM

Here is the heat shield removed.

WNDSRFR · 04-18-2014, 02:07 PM

And here are the parts of the heat shield.

WNDSRFR · 04-18-2014, 02:16 PM

As you can see the header is really not that bad a piece of work.
It is actually welded tubing rather than stamped steel as I expected it to be.

This may be why massive gains are not being seen with aftermarket headers. Because the stock one is really not that bad.

Another thing to notice is there is foam between the heat shield and the header. I'm guessing that this is the prevent rattling.

One thing you really have to think about is:

If Toyota went though all the trouble and expense of making this heat shield it must be there for a reason. (To prevent fires maybe?).

I think I'm going to wrap my header tomorrow.

leicaboss · 04-18-2014, 02:30 PM

Thanks for taking the pictures to share. Please let us know what you think about the wrap!

fooddude · 04-18-2014, 02:50 PM

Quote:

Originally Posted by WNDSRFR

As you can see the header is really not that bad a piece of work.
It is actually welded tubing rather than stamped steel as I expected it to be.

This may be why massive gains are not being seen with aftermarket headers. Because the stock one is really not that bad.

Very true. This looks much nicer than '90s cars and Honda manifolds that were a huge, ugly, cast iron brick that weighed 1000 lbs lol.

If this was stainless, shiny, smoothed joint connections, no heat shield, etc..it could easily pass for an aftermarket header..maybe borla or something.

reeves · 04-18-2014, 03:06 PM

Quote:

Originally Posted by WNDSRFR

As you can see the header is really not that bad a piece of work.
It is actually welded tubing rather than stamped steel as I expected it to be.

This may be why massive gains are not being seen with aftermarket headers. Because the stock one is really not that bad.

While the stock header isn't a bad piece, a good aftermarket header + tune should still give you a better torque curve and a significant bump where the stock torque dip occurs.

ramiram1984 · 04-18-2014, 03:10 PM

Yea other forum members have already done this. sweet.
you can guy that cat out.

kurbkilla · 04-18-2014, 03:11 PM

I'm impressed that the stock header is a stepped one (4-2-1) which is better then a 4-1 header. The only thing I think would make the stock header better is the size of the piping. Really this is a good stock header, all things considered.

ShadowSeraph · 04-18-2014, 03:40 PM

Quote:

Originally Posted by reeves

While the stock header isn't a bad piece, a good aftermarket header + tune should still give you a better torque curve and a significant bump where the stock torque dip occurs.

not should.. they do!

zc06_kisstherain · 04-18-2014, 03:47 PM

yeah i agree with others. one of best good STOCK header i ever seen.

Gilwith1l · 04-18-2014, 03:51 PM

It seems like the cat is the biggest drawback

FR-S Matt · 04-18-2014, 04:10 PM

Mine went to the garbage can somewhere....

malubawla · 04-18-2014, 04:39 PM

anyway you can measure the size of the ports on top, and also the exit port from the cat? thanks

04-18-2014, 02:02 PM	#1
WNDSRFR Senior Member Join Date: Jan 2014 Drives: FR-S,GTI Location: Cocoa, Florida Posts: 1,186 Thanks: 233 Thanked 867 Times in 441 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	Your stock exhaust manifold revealed I recently installed the Open Flash Header on my car and thought I would share these photos. This is the lump as it comes off the car. Attached Images

04-18-2014, 02:05 PM	#2
WNDSRFR Senior Member Join Date: Jan 2014 Drives: FR-S,GTI Location: Cocoa, Florida Posts: 1,186 Thanks: 233 Thanked 867 Times in 441 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	Here is the heat shield removed. Attached Images

04-18-2014, 02:07 PM	#3
WNDSRFR Senior Member Join Date: Jan 2014 Drives: FR-S,GTI Location: Cocoa, Florida Posts: 1,186 Thanks: 233 Thanked 867 Times in 441 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	And here are the parts of the heat shield. Attached Images

04-18-2014, 02:30 PM	#5
leicaboss Coffee Snob Join Date: Dec 2013 Drives: '14 SWP BRZ Limited Location: SF (Mission) Posts: 992 Thanks: 536 Thanked 395 Times in 250 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	Thanks for taking the pictures to share. Please let us know what you think about the wrap! __________________ My Build Thread: Hannah, my '14 SWP BRZ Weekly SF/Daly City Meet: Tuesdays @ 7pm

04-18-2014, 04:39 PM	#14
malubawla poor man's evora Join Date: Dec 2012 Drives: Turbod BRZ Location: Dallas Posts: 620 Thanks: 42 Thanked 190 Times in 137 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	anyway you can measure the size of the ports on top, and also the exit port from the cat? thanks __________________ my build thread http://www.ft86club.com/forums/showthread.php?t=77434

04-18-2014, 02:16 PM	#4
WNDSRFR Senior Member Join Date: Jan 2014 Drives: FR-S,GTI Location: Cocoa, Florida Posts: 1,186 Thanks: 233 Thanked 867 Times in 441 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	As you can see the header is really not that bad a piece of work. It is actually welded tubing rather than stamped steel as I expected it to be. This may be why massive gains are not being seen with aftermarket headers. Because the stock one is really not that bad. Another thing to notice is there is foam between the heat shield and the header. I'm guessing that this is the prevent rattling. One thing you really have to think about is: If Toyota went though all the trouble and expense of making this heat shield it must be there for a reason. (To prevent fires maybe?). I think I'm going to wrap my header tomorrow.

04-18-2014, 03:11 PM	#9
kurbkilla Senior Member Join Date: Nov 2012 Drives: Scion FRS (Asphalt) Location: Camarillo Posts: 217 Thanks: 63 Thanked 26 Times in 19 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I'm impressed that the stock header is a stepped one (4-2-1) which is better then a 4-1 header. The only thing I think would make the stock header better is the size of the piping. Really this is a good stock header, all things considered.

04-18-2014, 03:51 PM	#12
Gilwith1l Senior Member Join Date: Jan 2014 Drives: stock brz. saving my money for ls1 Location: central Jersey Posts: 129 Thanks: 91 Thanked 34 Times in 21 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	It seems like the cat is the biggest drawback

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