Spoiler that with help performance but not harm mpg?

[Hotrodheart]

Originally Posted by Tcoat

No.
With more down force you get drag.
You can also have up force, lateral force or neutral force that will create drag all dependent on what is creating the force.

Sounds like my date last Saturday night.

[Tcoat]

Originally Posted by Hotrodheart

Sounds like my date last Saturday night.

The force part or the drag part?
Both have some horrid implications.

[Impureclient]

I'd like to see someone with one of these stupid giant fucking wings also put a propeller on the car.

!!Genius!! That actually will probably be a thing.
Oops, nevermind, somebody already thought of it:

[Packofcrows]

[DVNARC]

Originally Posted by Ammunition

Yes, any "wing" that rises over the trunk while still letting air pass under it will hurt mpg, and won't have any benefit for normal street use (they also tend to be big) - their purpose is to create drag to remain planted during cornering and to an extreme extent - to avoid lift-off during very, very high speeds.

The FR-S has an almost ideal rear slant angle for drag reduction; a well designed, quality spoiler will net you a very slight decrease in the coefficient of drag because it will deflect the flow coming off the trunk slightly higher. I believe the video containing a lot of information regarding this is still posted on the front page of the website.

I don't think either will net you notable benefit for regular street use, so if you're set on adding a spoiler for the cosmetic appeal, I would just pick the one you like in that regard. A large wing will likely hurt mpg and depending on where you live I would be concerned about it attracting negative attention to your car.

What do you mean by negative attention to car exactly?

[Tcoat]

Originally Posted by DVNARC

What do you mean by negative attention to car exactly?

[Futaba]

In my experience wing size has been directly proportional to the number of times I've been pulled over, and also directly proportional to the number of times someone's revved at me at lights wanting to race.

[DVNARC]

Originally Posted by Tcoat

Lol nice pic of choice

[DVNARC]

Originally Posted by Futaba

In my experience wing size has been directly proportional to the number of times I've been pulled over, and also directly proportional to the number of times someone's revved at me at lights wanting to race.

lol then I guess duckbill it is...

[Impureclient]

Duckbill is still too much, you want this:

or even better

[Wes]

Originally Posted by Tectoniic

Just remember to avoid roof spoilers at all cost

THAT!

so hideous on this car, no offense to anyone else having one

[Packofcrows]

Originally Posted by soulreapersteve

Whats that? The car. Mitsubishi?

[soulreapersteve]

Originally Posted by Packofcrows

Whats that? The car. Mitsubishi?

Yes, sir!

[Packofcrows]

Originally Posted by soulreapersteve

Yes, sir!

Thanks! Those lights reminded me of a Supra a bit.