Custom Enhanced Diffuser (+Downforce?)

[MasterC17]

Here's some installed photos, and one with the trailer hooked up.

 

[katie3]

Nicely done! Clean red.

 

[larry996]

Here's some installed photos, and one with the trailer hooked up.View attachment 541631 View attachment 541632

MasterC17,
Could post detailed instructions on how to create / install these fins? Perhaps event a Youtube video.... I am very interested myself

 

[soupdogs]

Agree with zachbiz that adding straight-on strakes on the OEM diffuser likely doesn't benefit in terms of down force. It's just a guessing game putting on straight strakes on OEM diffuser without any testing, and even negatively impacting the rear aerodynamics.

The shape, mounting angles, and geometry of the strakes have to be optimized with testing.

Examples of strakes that are flared and optimized for the car:

https://photos.smugmug.com/MotoIQ/Project-Cars/Project-DBA-R35-Nissan-GT-R/i-dHrbTLN/1/1b7e08bd/X2/DSC_8797-X2.jpg

GT4 Rear Diffuser

Installation Instructions GT4 Rear Diffuser Overview: A properly designed rear diffuser not only looks great on your car, but is a very efficient way to add downforce. Using CFD software and 3D scans, the DBJ rear diffuser creates a completely flat bottom from the oil pan back to the rear of...

designsbyjacob.com

Couple of videos that helped me understand: