Subaru Legacy BN/BS (2015-2019) Service Manual: Installation

Inspection

Check that the resonator chamber has no deformation, cracks or other damages. ...

Intake (induction)(h6do)

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Other materials:

New vehicle break-in driving - the first 1,000 miles (1,600 km)
The performance and long life of your vehicle are dependent on how you handle and care for your vehicle while it is new. Follow these instructions during the first 1,000 miles (1,600 km):  Do not race the engine. And do not allow engine speed to exceed 4,000 rpm except in an emerg ...