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MHH AUTO MHH AUTO FORUMS. Trucks, Buses, CE, AG Software & Discussions Detroit Diesel Freightliner Cascadia 2020 DEF delete.
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Freightliner Cascadia 2020 DEF delete.

OFilippov  **
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1 02-17-2026, 03:40 PM
Hello everyone.
I have 2020 Freightliner Cascadia with DD15.
Everything is still working, but I'm f... tired paying for that DEF crap all the time. 
Is it possible just to disable it? From my understanding it should not affect any operation, just the exhaust gonna get 'little nastier' 😅.
I do have DDDL.
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danyboy05  ****
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2 02-17-2026, 04:13 PM (This post was last modified: 02-17-2026, 04:13 PM by danyboy05.)
yes it is ... from acm and mcm from both ecu

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