RENNtech ECU Upgrade for CLS 550 | C219 | 402 HP / 405 LB-FT | M273 BiTurbo | MY2007-2011

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RENNtech ECU Upgrade for CLS 550 | C219 | 402 HP / 405 LB-FT | M273 BiTurbo | MY2007-2011RENNtech ECU Upgrade for 219 CLS 550, up to 402HP, 405LB FT. Gains: +20HP & 14LB FT RENNtech M273 Biturbo ECU Upgrades 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

664 LB-FT @ 2

Our intermediate level 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

): 670 HP @ 5

With the proprietary RENNtech ECU Tuning the W213 - E63 AMG S 4MATIC+ gains up to +82 HP and +84LB-FT

stand-out look

558 wtq @ 3

ECU+ Upgrade | 540HP / 705LB-FT | +105HP / +262LB-FT

0L V8 BiTurbo) Modified Performance (at crank):

5L V8 BiTurbo) Stock Performance (at crank):

RENNtech ECU HHT (HandHeldTuner) for the 215 - CL 55 AMG

If you wish to go back to factory settings simply press Button 2

Sizes: S - 4XL

Exchange/Return Notes