BRZ Rear Diffuser
 

When building a BRZ for fun on the Subaru site there is a rear diffuser available for $750. It doesn't look like much, but besides getting some extra downforce on a track day (if it even provides any) is this worth considering for a daily driver? My understanding is that it wouldn't provide any extra benefit since it only assist with downforce at speed... :thanks:

To each his own. I ordered one mostly because I liked the visual more than anything. "Lots" of WRB on order!

It should help clean up the airflow going out the rear of the car. Unfortunately the rest of the underbody looks pretty turbulent. I think the JDM cars get some sort of smooth underbody panels but because of the US-market exhaust they eliminated it... How stupid!

I'm pretty much getting one for looks; I won't lie. It makes the arse-end look a lot more "finished"

http://www.rallyxd.com/rallyxd/wp-co...i-package5.jpg

I'm not convinced it's useful in any way (not real diffusers in general, this specific piece), so no.

Understood... :thumbup: That one in the picture you posted looks more pleasing to the eye. I guess that begs another question if this thing is going to be painted to match or just plastic because if so it will look like they put an asstache to match the front.

This. X1000. I think this car looks fantastic in stock trim. I refuse to throw anything on the body unless there is a clear, demonstrable advantage in performance over the stock configuration. The car has an impressive 0.27 Cd from the factory (with rear deck lid aero trim piece). I am loathe to ruin that Cd over what could potentially be a $750 appliqué component that does jack-shit.

PS: it looks idiotic with the US spec. exhaust tips.

Rear Underskirt video
 

That's a walk around with about 3 seconds of rear diffuser action. We need to see the underbody, not the ass.

I ordered one for my SWP, but mainly just for that little bit of finished look to it. I agree it looks bad with the standard US exhaust tips, but I am already on planning on getting the HKS Legamax Premium exhaust with the much larger tips. Hopefully it helps to just make a better looking rear end and sets it apart from some of the other SWP out there. Although, I am also getting dark tints and black wheels, so that should help too.

I think plasti dip spray would be the better option
On the wheels.

It's likely this accessory won't provide any real value to a street car from a performance standpoint.

Furthermore I personally don't think it lends itself to making the car look better. Maybe it looks better in person, but based on the video and the pictures I frankly think it looks exactly like what it is, a piece of hastily tacked on trim.

If you like it more power to you. As for me, no thanks.

It won't for a track car either. This part I mean. It doesn't look effective from what we can see and if it were an effective piece there'd be more pics to show it. It's a body kit item, nothing more.

When I posed this question I was hoping you'd answer this Dave! Cheers! :happy0180:

Who makes the gas cap?