ETS Subaru STI 2015+ Air Intake Kit Titanium

This titanium intake places the VA STI's filter in the fender well to feed the turbo away from engine-bay heat. I'd choose it when inlet flow, lower weight and the brushed or burnt titanium finish all matter.

Select MAF or speed-density configuration around the ECU setup. ETS specifies a tune for the larger MAF housing; the speed-density version needs the appropriate pressure/temperature inputs and calibration. Keeping the factory sensor does not mean retaining factory scaling.