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15,387 Posts
2nd Update
See the finished design in post #100.
Update
See the re-design in post #85.
Original Post
As seen over here.
On the OEM lips, the "lip" part starts higher on the sides and slowly fades into the bumper near the center (by the FMIC opening). The idea behind this is to maintain the same clearance as the black plastic piece, which also means the bottom of the lip slopes upwards from back to front.
I wanted something that was level across the bottom, as if it were a continuation of the side skirts.
My inspiration for this came from various members on here, as well as actual products.
Splitters by Individual:
C70 Winglets from Heico:
The slight indentation of the Elevate bumper and the ERST lip:
AJ's C30 lip mod inspired me to make my lip flow smoothly into the bumper. While his design looked really good, other C30 lip mods that I've seen don't seem to fit quite right on our cars. I believe this is because we don't have the continuation onto the fenders.
I love what he did with the facelift on Belle, but I wanted something a little less sharp and less evo-like.
The best examples I based my design off of were the non-existent MS-R lips, the A4, and the scratch guards on Porsches.
The OEM style lips follows the lines of the car well, especially on the sides going towards the wheel wells, so I modeled mine to be similar on the sides. However, you can see that the edge to the lip runs straight around the bumper (no slope) and the bottom of the splitter is level to the ground (it doesn't curve up towards the front).
Sorry for the flashed night shots, it's all I have on me right now and the lip looks a little smudgey from the rain last night. I'll get it cleaned up and post some better pictures soon.
My plan is to fill the gap between the lip and the bumper; one day it'll be painted to match the car.
Multiple times I almost gave up and went the C30 lip mod route, but I'm happy I stuck with my own design. I personally love the way it looks and my opinion matters most on my car.
See the finished design in post #100.
Update
See the re-design in post #85.
Original Post
As seen over here.
No, this is a completely custom job. While I only worked a few weeks on my rear diffuser, I spent about 8 months working on the lip design and cutting up a lot of bumpers making prototypes. Only in the last two months did I get my final design down, then it was just a matter of getting the right building/bonding/filling materials that can take the inevitable road abuse.is that the OEM modified?
On the OEM lips, the "lip" part starts higher on the sides and slowly fades into the bumper near the center (by the FMIC opening). The idea behind this is to maintain the same clearance as the black plastic piece, which also means the bottom of the lip slopes upwards from back to front.

I wanted something that was level across the bottom, as if it were a continuation of the side skirts.
My inspiration for this came from various members on here, as well as actual products.
Splitters by Individual:

C70 Winglets from Heico:

The slight indentation of the Elevate bumper and the ERST lip:


AJ's C30 lip mod inspired me to make my lip flow smoothly into the bumper. While his design looked really good, other C30 lip mods that I've seen don't seem to fit quite right on our cars. I believe this is because we don't have the continuation onto the fenders.

I love what he did with the facelift on Belle, but I wanted something a little less sharp and less evo-like.
The best examples I based my design off of were the non-existent MS-R lips, the A4, and the scratch guards on Porsches.


The OEM style lips follows the lines of the car well, especially on the sides going towards the wheel wells, so I modeled mine to be similar on the sides. However, you can see that the edge to the lip runs straight around the bumper (no slope) and the bottom of the splitter is level to the ground (it doesn't curve up towards the front).
Sorry for the flashed night shots, it's all I have on me right now and the lip looks a little smudgey from the rain last night. I'll get it cleaned up and post some better pictures soon.
My plan is to fill the gap between the lip and the bumper; one day it'll be painted to match the car.
Multiple times I almost gave up and went the C30 lip mod route, but I'm happy I stuck with my own design. I personally love the way it looks and my opinion matters most on my car.