RENNtech Porsche 997.2 Turbo (3.8L) ECU Upgrade (500 HP / 480 LB-FT) bmw-7-series--e66---2001-2008--esr3332914 CLASS S LONG (W 221)

CLASS S LONG (W 221) 500 [ONLY USA] [2 Filters Required] (HP: 387 | Year: 05 >)

Rated by Mercedes-Benz:                        463 HP @ 5

Each lug bolt order is made specific to the exact engineering specifications of the RENNtech wheels in combination with the vehicle application

RENNtech | 190 - AMG GT / S / C / R | Rollbar Roll Cage

RENNtech Porsche 997.2 Turbo (3.8L) ECU Upgrade (500 HP / 480 LB-FT) bmw-7-series--e66---2001-2008--esr3332914 CLASS S LONG (W 221)RENNtech Porsche 997. 2 Turbo (3. 8L) ECU Upgrade. Up to 550HP and 575LB FT. Gains: +50HP & +95LB FT Our proprietary Porsche ECU upgrade offers rock solid performance from RENNtech, the foremost tuning authority on Bosch and Siemens engine control units. These same units are utilized in Mercedes Benz vehicles, which RENNtech has been tuning since electronic engine management started to show up in vehicles during the mid 1980's, though our proprietary