BMW 1 Series (E81/E82/E87/E88) 135i panel filter Panel Filter:Panel Filter featuring aluminium fully adjustable with

featuring aluminium fully adjustable with rubber bush top mounts on the front and with aluminium and rubber bush top on the rear

replacing the restrictive steel 50mm link pipe with a full length lightweght alloy pipe with 63mm bore

This discharge can be heard as a distinct ‘dump valve’ hissing sound as it vents to atmosphere or back into the intake depending on the application and ECU airflow regulation

The main reason for uprating an intercooler is to reduce the charged intake temperature as this is directly related to engine power

BMW 1 Series (E81/E82/E87/E88) 135i panel filter Panel Filter:Panel Filter featuring aluminium fully adjustable withPanel type Unique Panel Dimensions 231mmX205mm