If the FB25 2.5L Boxer engine in your 6th generation (2015, 2016, 2017 & 2018) Subaru Outback has a rough idle or experienced surging, hesitation, jerking and lower fuel economy (MPG), you may need to clean or replace the MAP (manifold absolute pressure) sensor. Check out my DIY instructions for the procedure (with the OEM part numbers) by clicking on the text link or thumbnail image below.