Eurocharged AMG Speed Shift TCU Flash - $499
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combined it with his ECU, the car shift now at 6500 rpm not at 6200,
also you have a full manual M mode, torque converter jerk gone 90%.
Before if you spin tires at wot it shift earlier at 5700-5900, now it wont shift till 6500.
i will post video about the shifting.
we don't have a drag here, i would like to see someone on the 1/4 mile with the speedshift and 6500 rpm, how much drop in time?




