It do88 Intake system for the BMW M140i, M240i, 340i and 440i F3X of B58 Gen 1 engine has been developed for vehicles with increased power levels. The system combines a sealed air filter housing with a large cotton air filter and a mandrel curved aluminum inlet pipe for optimized air supply.
The system utilizes a fully enclosed design with a heat shield, cover, and rubber seals to supply fresh air exclusively through the original air duct. The intake pipe has a diameter of 85 mm (3.3") and runs out to 93 mm (3.7") towards the turbo intake. The inner diameter of the pipe is specifically matched to the original MAF sensor.
Properties
- Fully enclosed intake system
- Developed for BMW B58 Gen 1 engines
- Equipped with heat shield, lid, and rubber seals
- Uses the original air intake duct
- Large custom-designed cotton air filter
- Tightly woven cotton mesh for filtration
- Washable and reusable air filter
- Mandrel curved aluminum inlet pipe
- Correct inner diameter for the original MAF sensor
- Prevents inaccurate MAF measurements due to incorrect tube diameter
- Developed for tuned engines, hybrid turbos, and big turbo kits
- Increases airflow by up to 39%
- Reduced pressure drop compared to the original intake
- Reduced load on original components
- Improved throttle response
- Improved boost response
- Smooth design without sharp bends or restrictions
- Amplifies the intake sound of the turbo and diverter valve
- Compatible with future turbo upgrades
Technical specifications
- Product type: Intake system
- Engine: BMW B58 Gen 1
- Inlet pipe material: Aluminium
- Construction: Mandrel curved tubing
- Air filter connection diameter: 85 mm (3.3")
- Diameter towards turbo intake: 93 mm (3.7")
- Air filter material: Cotton mesh
- Air filter maintenance interval: Clean every 10,000 km
- Recommended filter oil: BMC Filter Oil WAFLU250
- Recommended cleaning agent: BMC Washing Fluid WADET500
- Increase in airflow: Up to 39%
- Measured improvement 100-200 km/h: 0.4 seconds on a Stage 2 vehicle
- OE references: 13718601678, 13718605164, 13718601682
Contents of the set
- do88 Intake system
- 85 mm aluminium inlet pipe
- Cotton air filter
- Sealed air filter housing
- Cover for air filter housing
- Heat shield
- Rubber seals
Frequently Asked Questions
Is the air filter washable?
Yes, the cotton air filter is washable and reusable for a long lifespan.
How often should the air filter be cleaned?
do88 recommends cleaning the air filter every 10,000 km with a suitable cleaning agent for cotton air filters.
Does the air filter come with filter oil?
No, the air filter is supplied without filter oil. For use in dusty conditions, BMC Filter Oil WAFLU250 is recommended.
Does the system use the original air intake duct?
Yes, the intake system uses the original air supply duct for the supply of fresh air.
