RENNtech ECU Upgrade for E 55 | W210 | 365 HP / 405 LB-FT porsche-911--997-2---2009-2013--gt3-esr2014754 CLASS S (W 221) 400

CLASS S (W 221) 400 HYBRID [2 Filters Required] (HP: 279 | Year: 09 >)

Lowering Range: 1

E400 (Air Body Control Optional)

SL (R230) 600 V12 [2 Filters Required] (HP: 500 | Year: 02 > 06)

All wheels are durability tested according to all United States relevant governmental standards for safe road use

RENNtech ECU Upgrade for E 55 | W210 | 365 HP / 405 LB-FT porsche-911--997-2---2009-2013--gt3-esr2014754 CLASS S (W 221) 400RENNtech ECU Upgrade for 210 E 55 AMG. Up to 365HP and 405LB FT. Gains: +11HP & 14LB FT Model Year 1996 2000 : Bench Flash (ME2. 0 ECU) 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