# Interesting aero on the GT3 RSR

**URL:** <https://forums.speedlife.net/t/interesting-aero-on-the-gt3-rsr/261268>\
**Category:** Shift518 Automotive\
**Created:** [November 9, 2011, 3:11pm UTC](https://forums.speedlife.net/t/interesting-aero-on-the-gt3-rsr/261268 "2011-11-09T15:11:55Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Boxersix](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/boxersix/32/6327_2.png) [@Boxersix](https://forums.speedlife.net/u/Boxersix)\
**Post date:** [November 9, 2011, 3:27pm UTC](https://forums.speedlife.net/t/interesting-aero-on-the-gt3-rsr/261268/2 "2011-11-09T15:27:42Z")

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> [@Free: Shop rack & nice firepit](https://forums.speedlife.net/t/free-shop-rack-nice-firepit/46402/24):
>
> ![http://4.bp.blogspot.com/-tcjyZIOu9W0/TrVM0gVxwWI/AAAAAAAAJOg/MQEIvP2G2wM/s1600/car_wallpaper_+Porsche+911+GT3+RSR+01.jpg](https://canada1.discourse-cdn.com/flex034/uploads/speedlife/original/3X/a/e/ae539b8760227945483881781deb7a4aac529001.jpeg)
> 
> Cut away body work to let out higher pressure behind the car is pretty cool. Not a new development in the aero world but certainly looks unique here. I was curious as to the lack of the rear diffuser though. Is there a reason for just the small flip up in the back instead of the larger venturi style? **Due to the engine size/placement perhaps**?

That undertray only floats about 1/4-3/8" from the bottom of the new engine in that car(A91, no longer the metzger design)

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