Mercedes E63 AMG Biturbo 4-Matic (2014on) – RENNtech ECU intermediate upgrade





RENNtech M157 Biturbo ECU Upgrades are TÜV approved!

RENNtech’s intermediate level ECU upgrade for the Mercedes M157 engine still offers huge gains in performance across the entire RPM range, but with a slightly reduced peak HP and torque from our standard tune. This is ideal for customers who want increased performance in their daily driver without worry of extra strain on driveline components or for areas and countries with extreme altitudes, temperatures or fuel quality concerns.

Their intermediate ECU tune increases performance from 556 HP and 550 lb/ft torque to 638 HP and 695 lb/ft at the crank! This is a slight reduction from our standard tune but still offers white knuckle performance at one of the most affordable price points in the tuning market.

  • Note: We have found the new M157 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz. We typically see slightly higher baseline numbers than claimed by the factory.


E 63 AMG (W212 – M157 Biturbo 4-MATIC Engine) Stock Performance:

  • E 63 AMG:
  • 550 HP @ 5,250-5,750 RPM; 531 LB-FT @ 1,750-5,000 RPM
  • E 63 AMG S:
  • 577 HP @ 5,500 RPM; 590 LB-FT @ 2,000-4,500 RPM
  • Note: Mercedes M157 engine performance when measured obtains higher numbers that rated from factory.

Modified Performance:

  • E 63 AMG:
  • 671 HP @ 5,550 RPM; 789 LB-FT @ 2,750-4,000 RPM
  • E 63 AMG S:
  • 671 HP @ 5,550 RPM; 789 LB-FT @ 2,750-4,000 RPM
*NOTE – We would need either the ECU or the vehicle bringing to our premises in Cheshire

Due to some of the products coming direct from RENNtech USA please allow 7-10 days for delivery

Prices may vary in accordance to the current exchange rate, please contact us for the current confirmed price

Our refunds policy can be found here