The N63 twin turbo V8 in your M550i or M850i makes serious power, and it deserves an engine bay that looks the part. Open the hood on a stock car and you find plastic airbox lids with molded channels that take up space and do nothing. That is room your turbos could be breathing through.
The Dinan Gloss Carbon Fiber Cold Air Intake for the BMW G30 M550i and G14, G15 and G16 M850i keeps the factory lower airboxes and replaces the lids with enlarged 2x2 gloss carbon fiber units. By removing the unused U-channels in the factory lids, Dinan increased airbox volume by 54%. On a stock car it recorded top end gains of +17 WHP and +18 lb-ft of torque.
How the Dinan Carbon Fiber Cold Air Intake Makes More Power
More volume is only half of it. The larger airboxes hold bespoke high-flow cone filters with 22% more surface area than the factory panel filters, for a 34% increase in total filter area (102.1 in² vs 76.3 in²). From there, an organically shaped intake pipe carries the air to the turbos without the tight bends of the stock routing. The system is sealed, so the engine only draws colder outside air, not heat from the V8 bay. The result is better throttle response and power that Dinan measured on the dyno, not a sound-only upgrade.
This is 100% genuine carbon fiber in a 2x2 gloss weave, not a wrap or hydro-dipped plastic. It replaces the stock plastic lids and gives the bay the same finish you would expect inside an 8 Series.
Dinan Carbon Fiber Cold Air Intake Fitment and Legal Status
Fitment is specific. It fits the LCI (facelift) M550i and every G1x M850i. The pre-LCI M550i has a different engine bay layout and will not accept it. No tune is required; Dinan's gains were measured on the stock tune. Before you order, know this: it is not legal for sale or use in the State of California. It is sold under the EPA Tampering Policy for other states, CARB testing is pending, and no CARB Executive Order number has been issued. Dinan part number D760-0071. Sold by AutoTecknic, an authorized Dinan dealer.
What's Included
- Two enlarged 2x2 gloss carbon fiber airbox lids
- Two high-flow cone filters
- Dinan intake pipes
- Installation hardware
Key Features
- Dinan-tested top end gains of +17 WHP and +18 lb-ft on a stock car
- 54% more airbox volume by removing unused factory U-channels
- 34% more filter area: 102.1 in² vs 76.3 in² stock
- Cone filters with 22% more surface area than the factory panel filters
- Sealed system draws only colder outside air
- Real 2x2 gloss carbon fiber, not a wrap or overlay
- Retains the factory lower airboxes for a straightforward install, about 1 hour
Vehicle Fitment
Fits the following N63 V8 BMW models:
- BMW M550i / G30 LCI Sedan (2020-2023): M550i xDrive, LCI models only
- BMW M850i / G15 Coupe (2019-2026): M850i xDrive
- BMW M850i / G14 Convertible (2019-2026): M850i xDrive Convertible
- BMW M850i / G16 Gran Coupe (2020-2026): M850i xDrive Gran Coupe
Exclusion: pre-LCI G30 M550i is not compatible.
Installation Notes
Because the factory lower airboxes stay in the car, Dinan rates this at about 1 hour of labor. A DIYer with basic hand tools can do it on a cool engine. Follow the Dinan instructions included with the kit.
- Let the engine cool and remove the engine covers as directed in the instructions.
- Remove the factory airbox lids, panel filters and intake pipes.
- Fit the cone filters and install the Dinan carbon fiber lids on the factory lower airboxes.
- Install the Dinan intake pipes and secure every coupler and clamp with the supplied hardware.
- Reinstall the covers, start the engine and confirm all connections are tight with no warning lights.
