Diffuser Option on the BRZ - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Markone · 01-10-2013, 11:55 PM

My MGM BRZ is due in May 13 and I have decided to add a few factory/ dealer options including a rear diffuser has anyone also order this option? Any photos and thoughts would be appreciated.

Sent from Mark's iPad using Tapatalk HD

ZC6BRZ · 01-11-2013, 12:01 AM

You can see plenty of pictures if you search the forum.

It's a really expensive piece of eye candy. While it probably does work, the ROI is probably low, unless you are looking at it as a cosmetic mod. You can get an aftermarket CF one for less than a new OEM one, too.

t0dd · 01-11-2013, 12:01 AM

Funny I was just looking at these online. They are stupidly expensive from Subaru, I chose not to get the factory one and am looking at aftermarket. About the only one around for now is this:

http://www.ft86club.com/forums/showthread.php?t=21051

Very pretty but maybe a touch umm chunkier than the Subaru one. Interesting that the dry-carbon part is CHEAPER than the plastic POS Subaru OEM one!!

Captain Snooze · 01-11-2013, 12:17 AM

The following is just conjecture on my part.
1/ For a diffuser to work properly the entire underneath of the car has to be designed with the diffuser in mind. That is, inverse wing.
2/ I don't think the BRZ/86/FR-S has sufficient power to deal with much aero.
3/ If it is only cosmetic disregard the previous 2 points.

MACCAA · 01-11-2013, 01:03 AM

There are very few road cars with spoilers/splitters/wings that actually do anything,aero-wise.
86/BRZ's fall into this category-they're just body kit pieces for appearance.
Chech how solid the standard "diffuser" is.
If there was any aero involved,this would be the first thing to be blown off........
Cheers
Len

DriftEightSix · 01-11-2013, 01:40 AM

Quote:

Originally Posted by MACCAA

There are very few road cars with spoilers/splitters/wings that actually do anything,aero-wise.
86/BRZ's fall into this category-they're just body kit pieces for appearance.
Chech how solid the standard "diffuser" is.
If there was any aero involved,this would be the first thing to be blown off........
Cheers
Len

I guess you missed this when reading about this cars stock areo...

Quote:

With a drag coefficient of just 0.27, the 86 is designed to slip through the air with minimum resistance.

Source: Toyota Australia's Website

nzer · 01-11-2013, 02:26 AM

TRD do a nicely understated metal option (stainless I think) that I'm sure would for the BRZ. Toyota North Shore here in NZ would be able to give you a price freighted to OZ - just google them or PM @caldine

From a cosmetic point of view I think it looks great without being too over the top as some of the carbon ones are.

As mentioned by others, from an aero point of view I don't think it would do much.

.

MACCAA · 01-11-2013, 02:30 AM

Quote:

Originally Posted by DriftEightSix

I guess you missed this when reading about this cars stock areo...

Source: Toyota Australia's Website

No I didn't.That's drag coefficient,not aero[as commonly used re downforce or lift]
Drag coefficient has nothing to do with downforce-which is what the thread was about.
Drag coefficient relates to the "slipperyness" of the car's drag in a straight line.
Downforce is the amount of pressure pushing down on the car.
Cheers
Len

Hanakuso · 01-11-2013, 02:33 AM

I don't believe there is a real diffuser out for the twins yet. Well maybe that TRD 86 at the TAS but that's the only thing I've seen.

Captain Snooze · 01-11-2013, 02:37 AM

Quote:

Originally Posted by DriftEightSix

"With a drag coefficient of just 0.27, the 86 is designed to slip through the air with minimum resistance. "
Source: Toyota Australia's Website

That wouldn't be marketing hyperbole would it?

nzer · 01-11-2013, 02:54 AM

Quote:

Originally Posted by Hanakuso

I don't believe there is a real diffuser out for the twins yet. Well maybe that TRD 86 at the TAS but that's the only thing I've seen.

The one posted above is the genuine TRD part.

.

Hanakuso · 01-11-2013, 03:02 AM

Quote:

Originally Posted by nzer

The one posted above is the genuine TRD part.

.

The one you posted is most likely not a "true" diffuser in the sense that it can help generate downforce. Most likely it only reduces drag.

This is the diffuser I was talking about.

nzer · 01-11-2013, 03:11 AM

Quote:

Originally Posted by Hanakuso

The one you posted is most likely not a "true" diffuser in the sense that it can help generate downforce. Most likely it only reduces drag.

This is the diffuser I was talking about.

Ah, thanks for the pic.

You're correct, that's not in the TRD catalogue here and haven't seen it in the Japan catalogue yet.

Funny the marketing blurb here tries to paint it as adding something but I have my doubts. Does look good though!

http://japanparts.com/db/parts_detai...=&SEARCH_page=

.

Hanakuso · 01-11-2013, 03:34 AM

Quote:

Originally Posted by nzer

Ah, thanks for the pic.

You're correct, that's not in the TRD catalogue here and haven't seen it in the Japan catalogue yet.

Funny the marketing blurb here tries to paint it as adding something but I have my doubts. Does look good though!

http://japanparts.com/db/parts_detai...=&SEARCH_page=

.

I'm sure it does help make less drag, plus it looks great!

01-10-2013, 11:55 PM	#1
Markone Member Join Date: Oct 2012 Drives: BRZ DGM Auto with spoiler & CF Dash Location: Gold Coast Posts: 19 Thanks: 1 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Diffuser Option on the BRZ My MGM BRZ is due in May 13 and I have decided to add a few factory/ dealer options including a rear diffuser has anyone also order this option? Any photos and thoughts would be appreciated. Sent from Mark's iPad using Tapatalk HD

01-11-2013, 02:26 AM	#7
nzer Senior Member Join Date: Jun 2012 Drives: 2012 Grey TRD GT86, 2015 VW Golf R Location: Wellington, New Zealand Posts: 1,572 Thanks: 666 Thanked 942 Times in 540 Posts Mentioned: 62 Post(s) Tagged: 0 Thread(s)	TRD do a nicely understated metal option (stainless I think) that I'm sure would for the BRZ. Toyota North Shore here in NZ would be able to give you a price freighted to OZ - just google them or PM @caldine From a cosmetic point of view I think it looks great without being too over the top as some of the carbon ones are. As mentioned by others, from an aero point of view I don't think it would do much. . __________________ My fully loaded TRD86 http://www.ft86club.com/forums/showt...760#post582760

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01-11-2013, 12:01 AM	#2
ZC6BRZ Wannabe JDM Type S Join Date: Jul 2012 Drives: 2013 BRZ Limited Location: San Francisco Posts: 476 Thanks: 90 Thanked 207 Times in 118 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	You can see plenty of pictures if you search the forum. It's a really expensive piece of eye candy. While it probably does work, the ROI is probably low, unless you are looking at it as a cosmetic mod. You can get an aftermarket CF one for less than a new OEM one, too.

01-11-2013, 12:01 AM	#3
t0dd Member Join Date: Aug 2012 Drives: BRZ Location: Sydney, AUS Posts: 48 Thanks: 32 Thanked 8 Times in 8 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Funny I was just looking at these online. They are stupidly expensive from Subaru, I chose not to get the factory one and am looking at aftermarket. About the only one around for now is this: http://www.ft86club.com/forums/showthread.php?t=21051 Very pretty but maybe a touch umm chunkier than the Subaru one. Interesting that the dry-carbon part is CHEAPER than the plastic POS Subaru OEM one!!

01-11-2013, 12:17 AM	#4
Captain Snooze Because compromise ® Join Date: Jan 2012 Drives: Red Herring Location: australia Posts: 7,723 Thanks: 3,993 Thanked 9,346 Times in 4,127 Posts Mentioned: 60 Post(s) Tagged: 0 Thread(s)	The following is just conjecture on my part. 1/ For a diffuser to work properly the entire underneath of the car has to be designed with the diffuser in mind. That is, inverse wing. 2/ I don't think the BRZ/86/FR-S has sufficient power to deal with much aero. 3/ If it is only cosmetic disregard the previous 2 points.

01-11-2013, 01:03 AM	#5
MACCAA Member Join Date: Sep 2012 Drives: Solar Orange GTS Limited Edition Location: Georges Hall,Australia Posts: 72 Thanks: 4 Thanked 31 Times in 22 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	There are very few road cars with spoilers/splitters/wings that actually do anything,aero-wise. 86/BRZ's fall into this category-they're just body kit pieces for appearance. Chech how solid the standard "diffuser" is. If there was any aero involved,this would be the first thing to be blown off........ Cheers Len

01-11-2013, 02:33 AM	#9
Hanakuso Senior Member Join Date: Apr 2012 Drives: FR-S Location: California Posts: 1,956 Thanks: 294 Thanked 673 Times in 390 Posts Mentioned: 11 Post(s) Tagged: 2 Thread(s)	I don't believe there is a real diffuser out for the twins yet. Well maybe that TRD 86 at the TAS but that's the only thing I've seen.

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