High Air Filter Restriction
03-04-2026, (Subject: High Air Filter Restriction ) 
Post: #1
High Air Filter Restriction
2025 T880 X15

Driver said inlet air restriction was at 30 when loaded. We changed the filter (Filter was barely dirty and was changed 1 month before that). Driver said restriction was better, but still high around 17. We took apart whole inlet side and didn't see anything abnormal. What else should we check?
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03-04-2026, (Subject: High Air Filter Restriction ) 
Post: #2
RE: High Air Filter Restriction
Better quality filter?.


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Yesterday, (Subject: High Air Filter Restriction ) 
Post: #3
RE: High Air Filter Restriction
A few days later the truck came back with a def light on the dash. Ran a forced regen and that seemed to fix everything.
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