It adds more drag than the spoiler, not that you would notice the difference.

 

Some people don't like the way it looks.

http://hardtopguy.com/store/customer/produ...d=97&cat=&page=

 

Yea, I'm not sure if I like the looks or not. IMO it looks better in person than in pictures.

 

You can add a rear difuser. It can't hurt.

 

I don't know of any back-to-back wind tunnel tests being done with ANY aftermarket wing/spoiler for the S2000. So it's pure speculation for anything. (Except possibly those giant wings some of the California people use on the track. They report faster lap times with them.)

For what it's worth, the S2000 designer personally told me and several other S2000 owners who traveled to Tokyo that the OEM elements (front lip, side strakes and rear spoiler) are indeed effective aerodynamic modifications.

 

Agreed, the OEM pieces were windtunnel tested with scale mock-ups and DO work. They are a compromise between functional and cosmetic design. (the car without the pieces reportedly has ~300 lbs of lift at the rear at ~100 mph.. I don't have copies of the tests published some years ago).

I recently added the Mugen 3-piece spoiler and can tell you it works well enough that it can be felt by the driver. It is a spoiler designed and windtunnel tested to reduce lift and drag but probably cannot generate a great deal of down force like a wing can.

As near as I can tell the high speed aerodynamics of this car were an after-thought with the priority given to the classic roadster styling.

 

Very interesting... ~ 300 lbs of lift versus zero lift with the OEM pieces?

On a stretch of open Canadian road I went an itsy bitsy bit past the posted speed limit (actually I was following the speed limit posted in km/hr using my dash set to use mph... yes) and felt that the rear didn't feel as solid as I expected it to be. It's hard to explain. It just did not feel as planted as other cars I have driven. If the car is generating that kind of lift at 100mph, that would explain why I felt the way I did. That's enough to unload the suspension enough to minutely alter ride height.

So, it got me thinking about the value in improving aerodynamics. (REALLY improving it, not tacking plastic to the car to make it look Fast and Furious.)

 

If I get the wing spoiler for MY04 how important is it to get a front lip also(both OEM).

If the MY04 has 100 lb of lift at 100mph does anyone know how much it's reduced with the wing spoiler and/or lip combo??

 

all of c-west's s2000 products are windtunnel tested as well. You can see a short video of the windtunnel test on their website.

 

Er, I mean 300lbs @100mph