The SES3078TIP has a larger internal diameter to give your turbo free access to as much air as it can ever need. It is also designed with smooth airways to minimize turbulence and keep drag from fighting against your turbo's compressor. This simple change alone also increased the sound output of the turbo, giving you both tangible and audible performance gains. On our quest to make this part as durable as humanly possible, we have integrated the PCV Inlet as well as the mounting arm into the Unibody Cast Aluminum housing.