RENNtech ECU HHT Upgrade for GL 550 X164 | 402 HP / 405 LB-FT carbon-fiber 3rd generation Diverter Valve RENNtech

3rd generation Diverter Valve RENNtech is able to add up to 149 HP and 257 LB-FT to the 5

Up to 672 HP and 592 LB-FT @ crank

The maximum power number reached with the RENNtech ECU Plus Upgrade for the C205 - C 43 AMG Coupe is 416 HP and 460 LB-FT

CL (C 216) 500 4-matic [2 Filters Required] (HP: 388 | Year: 08 > 10)

RENNtech Full Intercooler Upgrade Kit for M157 - 63 AMG BiTurbo Series

RENNtech ECU HHT Upgrade for GL 550 X164 | 402 HP / 405 LB-FT carbon-fiber 3rd generation Diverter Valve RENNtechRENNtech ECU HHT Upgrade for 164 GL 550. Up to 402HP, 405LB FT. Gains: +20HP & 14LB FT RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980's! Our experience, countless hours of in house research, development and exhaustive testing ensure that our proprietary ECU upgrade offers incredible performance gains and rock solid daily driver reliability. RENNtech tuning software