BSR Optiflow Intake 4cyl with SAI (You can determine if you have air injection by looking for the presence of a small 1.5in hose off the front of the airbox. SAIi is only used on the 2003 and 2009 MY cars.
Current shipping version are updated but this image is the one with the SAI filter in it and will be kept.

The BSR Opti Flow Filter kit consists of an open air filter and a custom-made shield, including all installation parts.

The advantages of the Opti Flow filter are:
- The Sports Filter with low air resistance, gives quicker throttle response
- Ensures supply of cold and oxygen rich air
- Sporty intake sound, especially noticeable during acceleration (can be heard inside vehicle)
- Sporty engine compartment
- Washable filter components (cotton fabric)

The shield plate is made from stainless steel and Powder-Coated black. It is imperative that you do not over tighten the filter during installation as it will cause the filter to tear.

Install Document .pdf