Product Description

RENNtech M157 Biturbo ECU Upgrades are TÜV approved!

Our 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. Our intermediate ECU tune increases performance from 556 HP and 550 lb/ft torque to 624 HP and 680 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.

CL 63 (C216) M157 Bi Turbo-Stock Performance (Non Performance Package):

• 536 HP @ 5500 RPM; 590 LB-FT @ 2-4500 RPM

CL 63 (C216) M157 Bi Turbo-Stock Performance (With Performance Package):

• 563 HP @ 5500 RPM; 664 LB-FT @ 2-4500 RPM

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

Modified Performance (With Performance Package):

• 638 HP @ 5500 RPM; 695 LB-FT @ 3800 RPM

Modified Performance (Non Performance Package):

• 638 HP @ 5500 RPM; 695 LB-FT @ 3800 RPM

Our online store allows you to choose the best performance parts for your car. Instead of having the items delivered to your home, we can deliver direct to your local service center. You can browse products on this website. Please feel free to place an order and one of our representatives will contact you to arrange delivery and installation if requested of your new performance parts.