What is this SAI air filter kit used for?
SAI, or Secondary Air Injection is a system used on some VAG engines. The SAI-system has a line connected to the intake air filter box lid (since the SAI pump requires filtered air). When upgrading to an aftermarket intake system such as our do88 V2 Intake system the stock SAI line needs to be connected to a small separate air filter. This separate air filter can easily can be hidden underneath the intake system for a clean look.
Product Features:
do88