It's too tall for drag reduction,and it's chord is too short for any appreciable downforce(which you wouldn't need anyway).I'd say its just for styling purposes.It probably generates a little drag,so removing is okay,however,drag may be so low,its a wash.It's your call.
You might tuft test w/ and w/out the spoiler. Have someone photo the tests. I would place the tufts on the back of the rear decklid. I suspect the test will show no effect on the tufts providing you aren't running flat out.
The Bonneville Nationals is a PhD in streamlining.
Seeing the Nebulus Theorem, Turbinator, or Al Teague has been awe-inspiring. Burland at 422 with 50% power . If you ever go, take Plenty of WATER and SUNSCREEN (cover everything exposed and not exposed). The guys/gals in the pits are very friendly and approachable. The pits are so big that a bike would help.
What about spoilers for hatchbacks? I've noticed a few types:
- Type 1 - placed below the rear window
- Type 2 - above the window, extending above the roofline with a gap under it
- Type 3 - above the window, extending the roof horizontally of slightly down
- Type 4 - above the window, tiny
Here is a Honda with two spoilers, types 1 and 3
Which of these will help or hurt FE? I can tell that type 2 probably produces drag, but what about type 1? Does the tiny type 4 do anything?
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e·co·mod·ding: the art of turning vehicles into what they should be
What matters is where you're going, not how fast.
"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell
Great looking Black Deuce Coupe. 
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). The guys/gals in the pits are very friendly and approachable. The pits are so big that a bike would help.
