古惑強

I thought you have already installed the rear diffuser in your S1, surely the diffuser is supposed to clean up the air flow at the rear and reduce lift without compromising drag. I can't open your xls file from my phone, so not sure if you have taken in this factor.

古惑強

Have to admit the Sport 160 spoiler looks pretty good on the S1, kind of un-expected really!  As I always feel that the original body shape looks the best, but this S160 spoiler seems to integrate with the body line really well!  (This is purely a comment on cosmetic rather than functional issue)

With the S160 spoiler (rear lift +0.35) as well as the rear diffuser, the combined rear lift should be < +0.35.  Sounds like a better bet than a high rise adjustable rear wing which undoubtedly will have a much higher drag factor.

古惑強

Sorry, I still like the s160 spoiler only!

古惑強

Voting so far
1. 0
2. 0
3. 0
4. 2.5
5. 1.5

古惑強

S160 rear wing with raiser block gets my vote!