What tune changes are needed after a mechanical AFM/DOD delete on a 2008 Tahoe 5.3?
Here is what the documentation says. Each point links to its source; tables and names vary by computer, operating system and tuning software.
- Gen IV LS, Gen V LT: After a DOD/AFM/DFM delete, the PCM or ECM must be recalibrated so it no longer commands cylinder deactivation. (LSX Magazine)
- Gen IV LS, Gen V LT: An aftermarket cam in a delete build requires adjusting idle airflow, fueling, spark, torque modeling, and other drivability tables, beyond simply switching deactivation off. (LSX Magazine)
More in tuning fundamentals, or build a checklist for your swap with the tune checklist tool.
Confidence: medium — sources disagree or are limited; check the sources below.
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Sources
- DOD, AFM, And DFM Deletes: A Q&A With Michigan Motorsports — LSX Magazine