Whitey hit it right on. The oil on the filter is going to end on the MAF which is going to corrupt the air flow data. Worse yet is that the oil is going to end up in the turbo which is no good at all.
Anything on the filter on a boosted car is going to end up in the intake tract, there is far more vacuum there than you probably imagine. At even low throttle angles under boost it's enough to pull your hand into the piping.
Also, the Mazdaspeed intake come with a cleaning kit.
I considered the Injen but on a car with less than 1000 miles I wasn't taking the chance that if for some reason I broke down on a trip, some shop in Florida or Arizona was going to screw me on it.
Anything on the filter on a boosted car is going to end up in the intake tract, there is far more vacuum there than you probably imagine. At even low throttle angles under boost it's enough to pull your hand into the piping.
Also, the Mazdaspeed intake come with a cleaning kit.
I considered the Injen but on a car with less than 1000 miles I wasn't taking the chance that if for some reason I broke down on a trip, some shop in Florida or Arizona was going to screw me on it.