E400 BiTurbo 4MATIC
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RENNtech ECU+ Upgrade | S213 | E400 | 392 HP/432 LB-FT | 3.0L V6 BiTurbo | M276
ECU+ Upgrade | Up to 392 HP / 463 LB-FT | Gains: +53 HP & +78 LB-FT