ETS 08-14 Subaru STI Intake - Titanium

This 3-inch titanium intake places the STI's filter in the fender well, away from engine-bay heat. I'd choose it for a less restrictive inlet with lower weight and the brushed or burnt titanium appearance.

The larger MAF housing requires a matching tune even when retaining the factory MAF sensor. The speed-density option is for an ECU and sensor setup configured for that strategy. Choose the configuration around the tune rather than treating the two options as interchangeable.