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 the 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 the radiative heat transfer from the exhaust manifold. To guarantee enough air volume around the filter we designed a large 7; airbox which of course also leaves space for strut braces.
As replacement to the stock intake hose we designed a large 102mm (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. It is of course 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 the noise produced by the turbo and the air induction. Specifically, the factory intake hose features two sound silencers to ensure the turbo operates quietly. In contrast, our intake system comes without these noise-reducing elements, allowing a more audible turbo spool and induction sound.
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