TRD JDM Louver Install (and "review") - Page 3 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

nataku · 07-10-2014, 01:16 AM

Quote:

Originally Posted by ix2vi

Love the louver! What kind of wheels are those? I like how they sort of look like the stock wheels.

Sent from my iPhone using Tapatalk

Sorry I missed your post. Those are O.Z. Ultraleggera 17x8 in the Gunmetal color.

WallsAndFoundations · 08-16-2014, 12:02 PM

Rexspeed wide mirrors ftw. Do yourself and get you some, and never worry about that blind spot again.

caffeinejunky · 10-14-2014, 01:56 PM

Do you have a shot of branding on the louvers? Are they subtle like the Toyota branding on the side window deflectors?

AtlasMick · 10-14-2014, 09:43 PM

Have you noticed any change is gas mileage? I ask because of curiosity into how this affects the aerodynamics of the car.

Timmy_Jones · 10-16-2014, 06:49 AM

Quote:

Originally Posted by AtlasMick

Have you noticed any change is gas mileage? I ask because of curiosity into how this affects the aerodynamics of the car.

You are kidding, right?

Roadcone · 10-16-2014, 09:33 AM

no, i was curious about the same thing... i lost over 2mpg going to a track pipe from a stock muffler... i could see these doing something similar.

AtlasMick · 10-16-2014, 10:42 AM

Quote:

Originally Posted by Timmy_Jones

You are kidding, right?

Nope, I wasn't kidding.

Timmy_Jones · 10-16-2014, 11:43 AM

Quote:

Originally Posted by AtlasMick

Nope, I wasn't kidding.

You MPG will be nearly identical, not something you would ever notice. Even with a triple blind study. It would be like adding a single horsepower to the car at 6800 RPMs, you would never know. The gain (or loss) would be negligible.

Timmy_Jones · 10-16-2014, 11:44 AM

Quote:

Originally Posted by Roadcone

no, i was curious about the same thing... i lost over 2mpg going to a track pipe from a stock muffler... i could see these doing something similar.

That's what happens when you make the car sound better, you want to hear it. 100% positive this was not from the muffler swap alone.

mav1178 · 10-16-2014, 01:45 PM

Quote:

Originally Posted by Timmy_Jones

You MPG will be nearly identical, not something you would ever notice. Even with a triple blind study. It would be like adding a single horsepower to the car at 6800 RPMs, you would never know. The gain (or loss) would be negligible.

Are you saying this based on fact? What is the measured difference in cD with the louver installed?

-alex

Timmy_Jones · 10-17-2014, 05:58 AM

Quote:

Originally Posted by mav1178

Are you saying this based on fact? What is the measured difference in cD with the louver installed?

-alex

I'm saying it based on common sense; if you purchased a coffee from Starbucks and we glued it to your roof, it would have much more of an aerodynamic impact on your car, yet your MPG would not change in any way that you would notice. Unless you are doing high speed runs on the Autobahn, you don't have to worry. Like the product? Buy it, don't fret over the minutia.

Roadcone · 10-17-2014, 02:43 PM

Quote:

Originally Posted by Timmy_Jones

That's what happens when you make the car sound better, you want to hear it. 100% positive this was not from the muffler swap alone.

100% positive it is... rear bumper on this car is a parachute... drive a section of road with the cruise on at 70... pull the stock axleback off and do it again... watch the mpg drop... the stock muffler acts like an undertray and helps push the air past the bumper rather than into it.

AtlasMick · 10-17-2014, 03:36 PM

Quote:

Originally Posted by Roadcone

100% positive it is... rear bumper on this car is a parachute... drive a section of road with the cruise on at 70... pull the stock axleback off and do it again... watch the mpg drop... the stock muffler acts like an undertray and helps push the air past the bumper rather than into it.

This is essentially what I was asking. The channel on top of the car funnels air over the back window and the Louver gets in the way of that and removes the smoothness to the air's transition. I personally love the look of the Louvers but wouldn't want to significantly change the aero of the car.

Now, if it really has no noticeable effect on the aero (which mpg might help indicate) then I'll probly be getting these sometime in the future.

OP, these are some sweet looking pictures you took!

JonnyRocket · 10-17-2014, 05:23 PM

Quote:

Originally Posted by WallsAndFoundations

Rexspeed wide mirrors ftw. Do yourself and get you some, and never worry about that blind spot again.

Next time don't quote the entire how-to, pictures and all. Pretty amateur hour.

10-16-2014, 09:33 AM	#34
Roadcone StreetKart Join Date: Jul 2013 Drives: 2014 Scion FR-S Monogram Location: Upstate, SC Posts: 477 Thanks: 43 Thanked 181 Times in 111 Posts Mentioned: 10 Post(s) Tagged: 1 Thread(s)	no, i was curious about the same thing... i lost over 2mpg going to a track pipe from a stock muffler... i could see these doing something similar. __________________ TRD\|Verus Engineering\|Titan7\|DEZOD Motorsports\|JDL Auto Design

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08-16-2014, 12:02 PM	#30
WallsAndFoundations Senior Member Join Date: Jun 2014 Drives: Posts: 650 Thanks: 379 Thanked 146 Times in 117 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	Rexspeed wide mirrors ftw. Do yourself and get you some, and never worry about that blind spot again.

10-14-2014, 09:43 PM	#32
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