When I bought mine it had a diy CAI. Basically the PO removed the box cut the tube and stuck a KN cone filter on it. I replaced the cone with a barrel type KN and installed an Injen sheild. It`s not pretty but it sounds good and doesn`t throw codes.
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99 Boxster sold
88 944S sold
Xpit Formula Four sold
95 Integra Solo I sold
71 Opel GT sold