RENNtech ECU Upgrade for SLS Black Series (C197- 657 HP / 490 LB-FT) porsche-911--992---2018-present--turbo-s---cabriolet-esr1556107 X156 - GLA 45 AMG

X156 - GLA 45 AMG

398 LB-FT @ 3

733 wtq @ 5

the HSM will be 'married' to the vehicle and can only be used with this vehicle

RENNtech ECU Upgrade for SLS Black Series (C197- 657 HP / 490 LB-FT) porsche-911--992---2018-present--turbo-s---cabriolet-esr1556107 X156 - GLA 45 AMGRENNtech 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 takes only a few minutes and the vehicle can be reflashed at any time as many times as you wish. The