BMW Intake Parts for BMW 3 Series E92 (2007-2013)

BMW Cold Air Intake System delivers more cool air to your BMW's engine, enhancing performance and producing an aggressive yet refined turbo whistle. Designed for significant performance improvements and ease of use, this intake system offers a range of benefits.

• Dyno-Proven Gains: Increases power by up to +7 HP and torque by +14 Lbs. x Ft.
• Improved Airflow: Outflows the factory intake by 34% for better engine breathing.
• High-Performance Flow: Measures 605 CFM @ 7" H2O for efficient air delivery.
• Open-Element Design: Allows visibility of the large air filter while sealing when the hood is closed to prevent hot air ingress.
• Convenient Filter: Features a washable and reusable Pro DRY S air filter for easy maintenance.
• Easy Installation: Innovative filter-to-housing interface and minimal hardware ensure a quick and straightforward setup.

In addition to the weak stock chargepipe, the factory N54 diverter valves can also be a source for boost leaks. The diverter valve takes overboost and re-directs it back through the intake and turbos instead of allowing it to pass into the intake manifold. It's the same as a blow off valve (BOV) but instead of releasing into the engine bay, it stays contained to the engine. The stock diverter valves (DV) are plastic and connect with more plastic into the chargepipe and turbo inlet pipes. The plastic can become brittle and crack even on stock engines and leak boost, which leads to a loss in power and performance.

Turbosmart has developed two kits to replace and upgrade the stock diverter valves - a direct replacement kit (shown) and a combination DV/BOV "Dual Port" kit. This direct replacement kit includes new high-performance DV and stronger silicone hose to connect them to the turbo inlet pipes (Vargas silicone inlets are recommended). The Turbosmart Kompact DV will give you all of the strength and reliability you need to take your turbo build to the next level.

You will also need T#553932 

• Seamless plug-and-play installation
• Minimizes leakage for enhanced turbocharger performance
• Retains OE control for optimal operation
• Superior thermal performance to maximize boost without stressing the turbocharger

Stock air filters are not designed for getting the highest flow rate possible. This causes air flow restrictions that prevent the highest possible power from the stock design. With COBB's BMW N55 High Flow Air Filter, designed to directly replace the stock air filter ( BMW Part # 13717599285), you can expect the highest flow rates from a stock style design while still maintaining maximum filtration. 

BMW N55 High Flow Filter

• Washable/Reusable Cotton Woven Media
• Precision Molded for Direct Drop In To The Factory Air Box
• Increased Air Flow While Maintaining Filtering Efficiency
• Pre-Oiled
• Compatible with COBB Accessport OTS Maps

Replacement stock air filter element for the stock BMW air box of the 2006+ E90/E91/E92/E93 3 Series 325i, 330i, 328i & 328xi.

This air filter fits the following BMWs:
2006 E90 3 Series Sedan - 325i, 325xi, 330i & 330xi
2007+ E90 3 Series Sedan - 328i & 328xi
2007+ E92 3 Series Coupe - 328i & 328xi

The diverter valve is responsible for redirecting boost away from the intake when it's not needed. Other cars use a blow-off valve to vent the pressurized air into the atmosphere (the whoosh sound commonly heard on turbo engines) but BMW and other makers use a diverter valve to keep the air circulating through the intake for emissions purposes. A failing diverter valve will lead to a boost leak as turbocharged air leaks past the seals instead of going into the engine when you want it. This is a minor issue on stock engines but a bigger issue on tuned or heavily modded engines (those will use an aluminum diverter valve instead of the stock plastic). The factory diverter valve is plastic which is prone to cracking and electric which will fail without warning. This is a direct replacement diverter valve for cars with the N55 and S63 (X5M/X6M) engines.

N55 takes 1 diverter valve.
S63 takes 2 diverter valves (1 per turbo).

This item fits the following BMW Chassis:
E70 X5M,E71 X6M,E70 X5 X5,E71 X6,E82,E90,E92,E93,F06,F10,F12,F13,F15,F16,F22,F25 X3,F26 X4 X4,F30,F32,F33,F34,F36
S63 engine applies to X5M/X6M only. Fxx M5/M6 uses S63TU engine and does not use a diverter valve at all.