RENNtech ECU Upgrade | S 450 | W222 | 402HP/454 LB-FT | 3.0L BiTurbo V6 | M276 | MY2018-2019 porsche-911--992---2018-present--carrera-4---cabriolet-esr2109975 CLK CABRIOLET (A 209) 55

CLK CABRIOLET (A 209) 55 AMG [2 Filters Required] (HP: 367 | Year: 03 > 06)

TCU (transmission control unit) upgrade in addition to our higher efficiency intercooler pump

RENNtech is able to add up to 111 HP and 147 LB-FT to the 5

Engineers have spent months developing a Slip-On exhaust system that takes the driving experience to a completely new level

With the proprietary RENNtech ECU+ Tuning the W463 - G550 4x4² gains up to +102 HP and +128 LB-FT

RENNtech ECU Upgrade | S 450 | W222 | 402HP/454 LB-FT | 3.0L BiTurbo V6 | M276 | MY2018-2019 porsche-911--992---2018-present--carrera-4---cabriolet-esr2109975 CLK CABRIOLET (A 209) 55RENNtech ECU Upgrade up to 402HP and 454 LB FT. Gains: +40HP & +70 LB FT RENNtech M276 Biturbo ECU Upgrades are TV approved! RENNtech tuning products are certified to meet CARB standards in all 50 States. 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