RENNtech ECU Hand Held Tuner (HHT) for E 500 | W211 | 320 HP / 355 LB-FT | MY2003-2006 mercedes-benz-e-class-coupe--207---2010-2013--e-550-biturbo-esr7403570 This product conforms to EPA

This product conforms to EPA Emission Standards and does not to reduce effectiveness of your vehicles original pollution control systems

W167 - GLE SUV GLE63 S AMG SUV | MY2021+

They have also been maximised in internal volume to reduce restrictions and in doing so we have also redesigned the OEM central cover as it fouls on the significantly larger system

We have found the new M178 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz

RPM Tuned: 637 HP | 625 LB FT

RENNtech ECU Hand Held Tuner (HHT) for E 500 | W211 | 320 HP / 355 LB-FT | MY2003-2006 mercedes-benz-e-class-coupe--207---2010-2013--e-550-biturbo-esr7403570 This product conforms to EPARENNtech ECU HHT (HandHeldTuner) for the 211 E 500. Up to 320HP and 355 LB FT. Gains: +18HP & +16LB FT. 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