RENNtech ECU+ Upgrade | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | for Mercedes-Benz  | C218 | CLS 63 AMG 2015-2018
RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!
Our proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to the ECU. Programming takes only a few minutes and the vehicle can be reflashed at any time as many times as you wish.
RENNtech M157 Biturbo ECU+ Upgrades are TÜV approved!
Our proprietary ECU+ upgrade for the Mercedes M157 Biturbo 4-MATIC engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability.Â
Notes:
- We have found the 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.
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Power gains are calculated based on stock numbers measured by RENNtech. Crank Performance Numbers are calculated with a 17% Drivetrain loss on 4MATIC vehicles.
- Our numbers will be dependent on conditions and fuel quality. 93+ Octane gasoline is mandatory with this Performance Upgrade.
- States known for poor fuel quality have to be supplied with a lower power setup.
Performance Numbers OverviewÂ
CLS 63 AMG (C218 | FL MY2015+ | 4MATIC | M157 | 5.5L V8 BiTurbo)Â Stock Performance (at crank):
- Rated by Mercedes-Benz: Â Â Â 577 HP @ 5,500rpm; 590 LB-FT @ 2,000-4,500rpm
- Rated by RENNtech: Â Â Â Â Â Â Â 605Â HP @ 5,500rpm; 646 LB-FT @2,800-3,900rpm
- Note: Mercedes M157 engine performance when measured, obtains higher power numbers than rated from factory.
CLS 63 AMG (C218 | FL MY2015+ | 4MATIC | M157 | 5.5L V8 BiTurbo)Â Modified Performance (at crank):
- Rated by RENNtech:        669 HP @ 5,500rpm; 734 LB-FT @ 3,700rpm
                          555 awhp @ 5,500rpm; 609 awtq @ 3,700rpm
- Crank Performance Numbers are calculated with a 17% Drivetrain loss on 4MATIC vehicles.
Vehicle Fitment Chart:
| MAKE |
MODEL |
YEAR |
Mercedes-Benz
|
CLS 63 AMG
|
2015-2018
|
Note:
Images are for representation purpose only and may differ depending on application.
⚠️ California Proposition 65 Warning:
This product may expose you to chemicals known to the State of California
to cause cancer or reproductive harm.
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