• Renntech launches W222 S560 ECU tune for the M176 4.0 liter twin turbo V8 - +85 rwhp

      The M176 4.0 liter twin turbo V8 is a very interesting Mercedes tuning prospect. Why? Because it is a value version of the M177/M178 4.0 liter twin turbo V8's and will be utilized in more models.

      You will see the M176 phase out the M278 and this is great news. Those that buy 560 models such as the W222 S560 are essentially getting an AMG engine architecture at a discount.

      Not to mention the tuning potential. The S560 is rated at 463 horsepower by Mercedes-Benz. That is even slightly underrated according to Renntech's baseline:

      Now look at the tuned figures. 502 horsepower at the wheels with 552 lb-ft of torque at the wheels as well.

      A budget S63 AMG? Yes indeed! Look at the acceleration figures:

      Performance Tests:
      Vehicle Upgrades 0-60mph 0-100mph 60-130mph 1/4 Mile ET Trap Speed
      W222 - S560 Sedan Stock w/o Launch Control 4.74 sec 10.85 sec 14.05 sec 13.15 sec 111 mph
      W222 - S560 Sedan Rt ECU+ Upgrade w/o Launch Control 4.25 sec 9.14 sec 11.01 sec 12.42 sec 117 mph
      *If not otherwise noted, performed on non-prepped asphalt and with OEM, Street-Legal and/or Non-Performance tires. Data measured with Racelogic Performance Box.

      For now only the W222 S-Class gets the M176 V8 but expect it spread throughout the lineup as the M278 is phased out.

      Product page:

      Performance Numbers Overview

      Mercedes-Benz S560 Sedan (MY2018+ | W222 | M176 | 4.0L V8 BiTurbo) Stock Performance (at crank):

      Rated by Mercedes-Benz: 463 HP @ 5,250-6,000rpm; 516 LB-FT @ 2,000-4,000rpm
      Dyno measured by RENNtech: 484 HP @ 5,600rpm; 538 LB-FT @ 4,750rpm
      Note: Mercedes M176 engine performance when measured on the dyno obtains higher power numbers than rated from factory.

      Mercedes-Benz S560 Sedan (MY2018+ | W222 | M176 | 4.0L V8 BiTurbo) Modified Performance (at crank):

      Rated by RENNtech (peak @ Crank): 584 HP @ 4,800rpm; 642 LB-FT @ 4,550rpm
      Rated by RENNtech (peak @wheel): 502 whp @ 4,800rpm; 552 wtq @ 4,550rpm
      Crank Performance Numbers are calculated with a 14% Drivetrain loss on RWD vehicles.
      For detailed explanation on crank HP, wheel HP, drivetrain loss, etc. please click here.

      This article was originally published in forum thread: RENNtech ECU+ Upgrade for Mercedes-Benz S560 | 584 HP | 642 LB-FT started by RENNtech View original post