DIESELR EZ Lynk Transmission Tune File T87A (2017-2019 6.6L L5P Duramax)DIESELR EZ Lynk Transmission Tune File T87A (20172019 6. 6L L5P Duramax) If youre running a tuned L5P but still stuck with stock TCM mapping, youre not getting the performance your truck deserves. The DIESELR EZ Lynk T87A Transmission Tune File is the missing piece. Its built to refine shift timing, torque management, and drivabilityeliminating sluggish shifts and gear hunting. This calibration is built specifically for the 20172019 L5P Duramax
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