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  1. Weaker Down Shifting

    I daily drive a 2023 B58 6-cylinder automatic Supra , bought brand new, has 4500 miles and put through the proper break-in period. Mods : MST INTAKE , and JB4 (map 1 and occasionally map 2 on weekends with 93 octane on both maps) Concern: (when in SPORT MODE) - I feel as though the down...


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