Wind buffeting diffuser for MK8 Golf GTI, R (2022+)
Wind buffeting diffuser for MK8 Golf GTI, R (2022+)
Part# :
SKU:GP-8G-WBD
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If you found this product, you likely already know what it is for.
This part significantly reduces wind buffeting noise at highway speeds with the front windows all the way down. This wind noise or wind buffeting is also known as Helmholtz resonance.
Wind buffeting is particularly bad on 2 door vehicles, but anyone in a 4 door will also notice the helicopter-like noise in your inner ear when you open just the front windows.
This part is most effective from 0-80mph. Above 80mph the buffeting noise will begin to overcome this parts ability to reduce the resonance. Cross winds can also reduce their effectiveness. These work best when they are diverting air flow from vehicle movement.
IMPORTANT NOTE: As with any aerodynamic part, other parts upstream on the exterior of the car can effect this part’s function. Splitters, endplates, tire spats, hood vents, fender vents can all change airflow feeding into this part. Our testing was done on a car with our V3 aero kit, fender and hood vents. Your results may vary.
Our serrated design is more effective than the small curved profiles you commonly see on Supra's, and Porsche's to combat this noise. Those options do reduce wind noise at some speeds, however they often cause noise at lower speeds. Their effectiveness tapers off above 70mph in most cases (Go read product reviews if you don't believe it).
Do these really work!? - don't take our word for it, read the reviews on our website, or check out some video reviews:
Made of 3D printed satin black UV resistant ABS composite plastic. Adheres to the front triangle window with included 3M VHB tape. The inside edge is contoured to match the curve of the window, and a pocket recessed into the surface for the VHB tape. The side mirrors can still be folded with this installed.
Why 3d print this? Because it keeps this part affordable for everyone. Most people don't want to spend hundreds of dollars on milled plastic or carbon versions for a part this small.
You can lightly sand and paint this plastic if you prefer gloss black finish.
Each Order Includes:
- 1 Driver Side Reducer
- 1 Passenger side Reducer
- Pre-applied 3M VHB Tape
- Alcohol Swab to clean the window
**Using this part in conjunction with window wind deflectors will create noise at lower speeds.**
Shipping
Shipping
In-stock parts ship within about 2 business days (Mon–Fri). UPS Ground delivery is usually 2 to 5 business days after shipping. Chassis-mounted splitters, carbon parts, wings and brake duct kits are built to order and take about 3 weeks to build before they ship. Choose a shipping option at checkout to see your estimated delivery date for your order. Full details are on our FAQ & Shipping page.
Returns
Returns
At a glance
Items not listed as non-returnable below can be returned within 30 days of delivery, including gauge pods and spoiler extensions. Side skirts, front lips, rear diffusers, chassis-mounted splitters, swan neck wings, cooling parts, gift cards and digital files cannot be returned. A 10% restocking fee, based on the order total, applies to shipped orders, except for defective or damaged items. To start a return, log in at account.cjmind.com. If an item is defective or damaged, we cover the return label and the restocking fee is waived.
Read the return & cancel order policy here.
Install Info
Install Info
Install sheets can be found on CJMinstall.com. We are in the process of digitizing all sheets. If you can't find the copy you need, please email us! support@cjmind.com
This Product Contains 3D Printed Parts
Quality and Durability
We exclusively use ABS, ASA, and Polycarbonate filaments with UV additives. These are engineering grade materials that have been tested in and on vehicles across the US over numerous years. We have been in business since 2017 with hundreds of reviews. You may see cheaper versions of our designs made of PETG and PLA on etsy, ebay, etc from other sellers. Those WILL NOT LAST in a car. We provide a one year manufacturers warranty from the delivery date (as defined by tracking) on all 3D printed parts. This covers layer separation, cracking and fading in the rare event that our part does fail.
Most printed parts come in a satin black finish. They can easily be sanded and painted with a rattle can for a custom color.
Why 3d printed?
We chose 3d printing for this application because it is more affordable for the low volume we make, and pass that onto you. We can maintain the same level of fit as an injection molded part, with a small sacrifice in surface finish (which can become show quality finish with sanding and paint). Printing allows minor adjustments and custom requests to be offered in a significantly shorter lead time.
Will you sell the .STL/.3MF file so I can print my own?
- We offer a few free and paid files for sale here.
- At this time we are not offering all files for sale. Current file formats do not give us the option to prevent piracy and public sharing of our designs. We hope that new features will be added to .3mf files that allow for us to protect our intellectual property and sell just a file in the future.