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Dear All,

Need some help here, my car is facing performance issue after cleaning air filter. My intake system is still stock except for the Works Engineering drop in air filter. Previously it drives good without performance and noise issue. Yesterday after i briefly check the air filter and clean the stuck dead bugs and leaves, i reinstalled and made sure nothing's loose. After that, my car is making loud humming noise at lower rev range, about 2 - 2.5k and loosing abit of low end torque...