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Changing the factory calibration is especially important when you modify your truck and/or install ECM Tuning
The customer is responsible for ensuring the core arrives safely and within the applicable return period
or Throttle Booster
without removing it from the vehicle
some models have tighter valve spring pockets
2024-2026 Duramax L5P Transmission Tuning Package Tuning Packages Changing the factory calibration isThe 2020 2026 L5P Duramax is known for its smooth shifts and great performance while towing. However, it still leaves a bit to be desired when it comes to shifiting in high performance senarios. It can fall behind due to its drawn out shifts and its weaker clutch holding strength. Changing the factory calibration is especially important when you modify your truck and or install ECM Tuning. Custom TCM Tuning gives you quicker shift changes, smoother
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