DESCRIPTION
Upgrade intake system components with the do88 Intake System. LF-250 fits BMW 320i/330e/330i B46/B48 (G20/G21).
do88 proudly presents the Intake System for BMW 320i and 330i G20, engineered for high power outputs!
Filtration, airflow and heat are the key considerations when designing a new intake system for a turbocharged engine.
Our do88 intake system has been developed to provide the turbo with good filtration, improved airflow path while also maintaining low inlet temperatures. One design challenge for this B48 / B46 intake system is location; it is just next to the exhaust manifold, which rapidly heat soaks this position in the engine bay.
High air intake temperatures are terrible for engine performance, as the turbo would have to build boost with hot, less dense air. This is why a fully sealed intake system is the only way to go to ensure IATs are kept to a minimum.
A fully sealed system, however, has a challenge since it results in a restriction with only one stock air feed in the bottom of the air filter box to draw air in from. During development, we noticed the system must have a secondary air feed to remove this restriction.
Our sealed airbox also has a heat shield to minimize radiative heat transfer from the exhaust manifold. To guarantee enough air volume around the filter, we designed a large 7" airbox, which also leaves space for strut braces.
As a replacement for the stock intake hose, we designed a large 102 mm (4") mandrel-bent aluminum pipe combined with a custom-made silicone hose. Fitted to the intake pipe is our large custom-designed air filter. The filter has a densely knitted cotton gauze for superior filtration and is washable and reusable for optimum performance and long service life.
The original air filter box and turbo inlet hose are designed with elements that minimize noise produced by the turbo and air induction. The factory intake hose features sound silencers to ensure quiet operation. In contrast, our intake system removes these noise-reducing elements, allowing a more audible turbo spool and induction sound.
Kit Contents:
- Large 105 mm (4.1") custom-designed cotton air filter with densely knitted cotton gauze. Delivered without filter oil; we recommend applying cotton filter oil for dusty environments (example: BMC Filter Oil WAFLU250).
- Washable air filter for optimum performance and long service life.
- Recommended cleaning interval every 10,000 km using cleaning products designed for cotton air filters (example: BMC Washing Fluid WADET500).
- Fully enclosed / sealed design ensuring only cold air supply to keep IATs low.
- Precision-engineered and design-optimized for unrestricted airflow.
- Optimized for tuned engines, hybrid turbos, and big turbo kits.
- Increases airflow up to 23%.
- Reduced pressure drop and strain on factory components compared to OE intake.
- Improved throttle and boost response.
- Smooth design with no sharp bends or restrictions.
- Enhanced induction sound from turbocharger and diverter valve.
- Compatible with future modifications, including turbo upgrades.
- UV- and heat-resistant high-gloss clearcoat for long-lasting protection.
OE Reference Numbers:
13718580424
13718580428
13718656981
Vehicle Fitment:
Model: BMW 3 Series (G20, G21)
Model Years: 2018–
Engine: B48, B46
Models: 320i, 320iX, 330e, 330i, 330iX
TECHNICAL DETAILS
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