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No one making fender braces or real rear diffuser?

2 common mods available on the market that make a noticeable difference on the car's handling are fender braces and a rear diffuser, yet there aren't any available for the

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Old 03-12-2013, 08:03 PM   #1 (permalink)
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Default No one making fender braces or real rear diffuser?

2 common mods available on the market that make a noticeable difference on the car's handling are fender braces and a rear diffuser, yet there aren't any available for the 370 yet after 4 years. Whats going on?

For those who don't know what they look like, here's some examples on the 350:









As for the "rear diffusers" that available for the 370 right now, those are just pretty cosmetic pieces that don't do jack sh1t.
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Old 03-12-2013, 08:09 PM   #2 (permalink)
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People have been asking for a true real diffuser for years, but no company has or is stepping up.
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Old 03-12-2013, 08:13 PM   #3 (permalink)
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Theres so much aftermarket support for the 350z.. Im jealous
I think evoR has a rear defuser but only for the nismo version. Thats about all we've got though.
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Old 03-12-2013, 08:25 PM   #4 (permalink)
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just seems like the only options right now is to custom fit the 350 or rx7 amemiya diffuser. gh3y
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Old 03-12-2013, 08:27 PM   #5 (permalink)
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i feel like there won't be an aftermarket abundance for the 370 until it's at least 5-7 years old when prices drop down to around 20k so more people can afford it, thereby creating more demand.
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Old 03-12-2013, 08:34 PM   #6 (permalink)
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Quote:
Originally Posted by wdkwang View Post
i feel like there won't be an aftermarket abundance for the 370 until it's at least 5-7 years old when prices drop down to around 20k so more people can afford it, thereby creating more demand.
Yeah i give it 2 more years till we really start seeing a lot more aftermarket support. Kinda sucks.
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Old 03-12-2013, 08:46 PM   #7 (permalink)
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I ran a custom made "real" rear diffuser on mine and couldn't get a difference in lap times or improved car feel after several design iterations... the problem is the airflow leading up to the rear axle is turbulent and needs to be smoothed out with an under-tray / perhaps other mods in order to get benefits... there's going to need to be some real aero testing to make this all work and please tell me who has the money to rent a wind tunnel or CFD model the entire car? ideally we'd get this out of Nissan
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Old 03-12-2013, 08:50 PM   #8 (permalink)
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so far as fender braces, interesting idea... there's other bracing available to address front-rear stiffness, and of course roll cage for serious track cars... do you have a particular handling concern you are trying to address with these?
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Old 03-12-2013, 10:58 PM   #9 (permalink)
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Fender braces may show a marked improvement on handling in a 350, but I somewhat doubt they'd have as noticeable of an effect on the 370....

Quote:
The 370Z features a front aluminum subframe, aluminum-alloy engine cradle, aluminum door panels, an all-aluminum hood, and an aluminum hatch. Front body torsion rigidity is improved by 10 percent with an extensively revised body structure which includes a new front suspension cradle to reduce front body lateral bending, new rear structural reinforcements, and an underbody "V-bar" to help reduce rear lateral bending. Rear body torsion rigidity is improved by up to 22 percent and rear body vertical bending rigidity is improved by up to 30 percent.
Nissan 370Z - Wikipedia, the free encyclopedia
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Old 03-13-2013, 08:08 AM   #10 (permalink)
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Quote:
Originally Posted by travisjb View Post
I ran a custom made "real" rear diffuser on mine and couldn't get a difference in lap times or improved car feel after several design iterations... the problem is the airflow leading up to the rear axle is turbulent and needs to be smoothed out with an under-tray / perhaps other mods in order to get benefits... there's going to need to be some real aero testing to make this all work and please tell me who has the money to rent a wind tunnel or CFD model the entire car? ideally we'd get this out of Nissan
I believe UT in Austin has one and talked to a few people, cost would be about 15-20k to rent it for a day. Issue is between setup, teardown, creating the airflow you could really only get 3-4 different cars on.
Which would be good if you had them all setup ready to go ahead of time. Say:
-Stock Coupe
-Stock Nismo
-Modded Nismo with front/rear air diffuser
-Modded coupe with front/rear air diffuser

But who wants to donate money?
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Old 03-19-2013, 03:33 PM   #11 (permalink)
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Quote:
Originally Posted by Honesty View Post
Fender braces may show a marked improvement on handling in a 350, but I somewhat doubt they'd have as noticeable of an effect on the 370....


Nissan 370Z - Wikipedia, the free encyclopedia
any extra reinforcement that isn't there to begin with would be very noticeable, as opposed to replacing a factory brace with a stronger aftermarket one.




also, i find it funny the civic has a more aerodynamically efficient underbody than the z



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Old 03-19-2013, 03:40 PM   #12 (permalink)
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GT Spec does have it for 370Z. My 370Z was the test car
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Old 03-19-2013, 04:33 PM   #13 (permalink)
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"GTSPEC USA <gtspecusa@gmail.com>

Mar 13 (6 days ago)

to me
Sorry Martin our G37 fender brace we offer doesn't fit the 370z. Do you think there is a market for it. You can always start an interest group on the forums. If we get enough inquires we will look into it.

Thank you
Sales
"
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Old 03-19-2013, 05:07 PM   #14 (permalink)
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Quote:
Originally Posted by EVOR View Post
GT Spec does have it for 370Z. My 370Z was the test car
There isn't one for the 370z since it's not listed on their site.
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Old 03-19-2013, 07:01 PM   #15 (permalink)
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Quote:
Originally Posted by wdkwang View Post
... i find it funny the civic has a more aerodynamically efficient underbody than the z...
two reasons for OEMs to spend engineering $ on underbody aero... one is downforce what we want, two is fuel efficiency what honda consumers want... the civic is a mature platform in a very competitive class, where the consumer cares a lot about fuel efficiency... not sure if a z buyer would pay more for an extra 0.5 mpg and guessing most Z buyers wouldn't be able to feel an extra 100-200 lbs of rear downforce. i could be wrong but i think we're in a small group and nissan knows it
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