05/06/2026
BMW 420i being transformed today π
In for engine and gearbox tuning, these engines are heavily detuned from factory, adjustments to the Ecu calibration completely transforms them as can be seen from the Dyno graph.
Stock - 196bhp / 270nm
HTS Tuned - 301bhp / 401nm
Proven gains of 105bhp & 131nm
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π: 01463 213622
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