SLK 350
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RENNtech | ECU Upgrade | R172 | SLK 350 BlueEFFICIENCY | 308HP/285TQ | 3.5L V6 NaturallyAspirated | M276
RENNtech ECU Upgrade for 172 - SLK 350 BlueEFFICIENCY. up to 308HP and 285TQ. Gains: +6HP & +12TQ