Brake duct scoop kit for ND

I had installed the brake scoops and it was easy made a huge difference in cooling the rotors. The only issue is I think there should be a clip system for the lower control arm vs. zip ties and better double face tape. I would use 3M VHB black tape the white tape it comes with is cheap. Just my 2cents!

Follow up. The scoop I had printed for me broke. I replaced it with the FM scoop which is much more sturdily made.
I did the mods from FM’s install video, but I bent the backing plate so it would direct air to the vents I opened in the backing plate

After a 25 minute session and a 2.5 mile cool down lap at High Plains Raceway I had a 120 degree F temp difference at the rotor. 400 right 280 left side with the scoop. I have no doubt real time monitoring might show a larger temp delta. 280 is a very cool operating range at High Plains. With different pads I have seen over 500.

My brakes are stock calipers with G-Loc R10 pads on 11” drilled and slotted rotors. Nothing fancy. 155hp ND. 205/50/16 Bridgestone Re71’s More HP and fatter tires will heat the brakes more and give you a larger temp delta.

The important point is these things really do work

I have a similar set of brake cooling scoops commercially printed from a free to download set of plans from the internet. Getting the job done was expensive. This option is so cost effective I bought a pair as spares.

I am still in the testing phase , with just one scoop installed to view differential temps at the end of a session. They do work , even with none of the install mods from the FM video.

Trimming the underbody spoiler makes a lot of sense. Removing turbulent air just in front of the scoops will provide laminar airflow to make them more efficient. And let them move more air. Smart. I did that mod right away.

As for folding the dust shield up to expose more rotor to airflow, I have no doubt that will work too. The question in my mind is at what temp will differential cooling affect rotor longevity. With a: stock motor and 205 series sticky tires, I may not get the brakes rotors hot enough to matter like true race cars do. . But to be on the safe side, I removed the rotor and used a Dremel tool to open cooling vents that will dump air to the center of the hub the way high end brake cooling kits do. A simple process.
Now instead of cooling only the inside face of the rotor with extra airflow, hopefully the air will be channeled to the central cooling vanes on the rotor, cooling both faces evenly.

After track testing, I will consider whether or not to open the vents more to include the actual braking surface of the rotor.

The tiny OEM vents on the brake dust shield are designed this way. They channel a small amount of air to the cooling vanes at the center of the rotor. What I have done is open them up to allow much more air in.

When I have a chance to do more on track testing I will report back.

FYI, I got a 25 degree F temp delta with no backing plate mods and no spoiler trim, which I expect to result in a large gain. That was with a 2 mile cool down lap. Diving into the hot puts to take measurements will yield a much higher temp delta.

Bottom line, I recommend these cooling scoops for anyone needing more track day brake cooling who does not want the cost and complexity of a high end brake cooling kit.

Simple mods like the two in the install video are big part of getting them to work better.