This seemingly simple yet very effective approach to the business of improved intake efficiency consists of a replacement lid for the stock airbox designed to increase overall volume and accommodate a high flow filter element. The lid is molded from a special composite material, chosen for its ability to resist power robbing under-hood heat. The lid also provides for a completely sealed air box, maximizing pressurization for optimum performance.
The addition of the Ram Air Intake Duct maximizes intake system efficiency for even greater improvements in overall performance.
Features:
- More Power: + 8 HP @ 6500 RPM, + 7 LB-FT @ 6500 RPM (coupled w/ engine software)
- Sealed system for maximum insulation from power robbing heat
- Additional ram air intake duct for additional air flow
- Enlarged filter element for optimum flow
Fitment/Applications:
- 2003-2005 BMW E85 Z4
Not compatible with the Z4 3.0i (E85) from 2006-2008.
Stage 2 Engine Software recommended for optimum performance and drivability.
Installation Instructions:
Emissions:
This part is legal for sale and use on Emissions Controlled Vehicles, in all 50 states, when used in accordance with the manufacturers application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number.
The following vehicles are considered Emissions Controlled Vehicles:
- 1966 and newer U.S. manufactured California Certified vehicles
- 1968 and newer U.S. manufactured Federally Certified vehicles
- 1968 and newer Foreign manufactured vehicle