RENNtech

If you want more from the 2019-2020 E 450 Wagon without touching the hardware, this RennTech ECU+ Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 3.0L M276 twin-turbo V6, raising power and torque through the full band...

The X290 AMG GT 63 S 4-Door is already a heavy hitter, but RennTech found real headroom in the M177 twin-turbo V8. On its own dyno RennTech measured the car at a peak 681 hp and 736 lb-ft stock, and the ECU+ calibration raises...

If you want more from the 2019-2023 G 550 BiTurbo without touching the hardware, this RennTech ECU+ Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 4.0L M176 twin-turbo V8, raising power and torque through the full band...

If you want more from the 2019-2023 G 63 AMG BiTurbo without touching the hardware, this RennTech ECU+ Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 4.0L M177 twin-turbo V8, raising power and torque through the full...

If you want more from the 2021 AMG GT Black Series without touching the hardware, this RennTech ECU+ Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 4.0L M178 twin-turbo V8, raising power and torque through the full...

If you want more from the 2021-2022 GLE 63 S AMG BiTurbo EQ Boost without touching the hardware, this RennTech ECU+ Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 4.0L M177 twin-turbo V8, raising power and torque...

If you want more from the 2021-2023 Aston Martin DBX V8 without touching the hardware, this RennTech ECU+ Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 4.0L M177 twin-turbo V8, raising power and torque through the full...

If you want more from the 2021-2023 GLS 63 AMG without touching the hardware, this RennTech ECU+ Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 4.0L M177 twin-turbo V8 EQ Boost, raising power and torque through the...

If you want more from the 2021-2023 GLE 580 BiTurbo without touching the hardware, this RennTech ECU+ Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 4.0L M176 twin-turbo V8, raising power and torque through the full band...

The 2021-2023 GLE 63 AMG BiTurbo responds well to software, and RennTech has been writing engine calibrations since electronic engine management arrived in the mid-1980s. This ECU+ Upgrade rewrites ignition timing, throttle mapping, fueling and boost control on the 4.0L M177 twin-turbo V8, so...

The 2021-2023 GLS 580 BiTurbo responds well to software, and RennTech has been writing engine calibrations since electronic engine management arrived in the mid-1980s. This ECU+ Upgrade rewrites ignition timing, throttle mapping, fueling and boost control on the 4.0L M176 twin-turbo V8, so the...

The 2021-2026 Mercedes-Maybach GLS 600 responds well to software, and RennTech has been writing engine calibrations since electronic engine management arrived in the mid-1980s. This ECU+ Upgrade rewrites ignition timing, throttle mapping, fueling and boost control on the 4.0L M177 twin-turbo V8, so the...

The 1990-present G 550 has a great exhaust note that the factory valve logic keeps muted most of the time. RennTech's Exhaust Valve Module overrides that logic by remote, so the valves stay fully open whenever you want, regardless of speed, rpm or drive...

The 1994-1999 Ferrari F355 has a great exhaust note that the factory valve logic keeps muted most of the time. RennTech's Exhaust Valve Module overrides that logic by remote, so the valves stay fully open whenever you want, regardless of speed, rpm or drive...

From the factory, the exhaust valves on the 1996-2006 Ferrari 550 / 575 only open fully at certain speeds and rpm, even with the sport exhaust selected. The RennTech Exhaust Valve Module (EVM) hands that decision to you: one button on the remote opens...

From the factory, the exhaust valves on the 1999-2005 Ferrari F360 Modena / Spider / Challenge only open fully at certain speeds and rpm, even with the sport exhaust selected. The RennTech Exhaust Valve Module (EVM) hands that decision to you: one button on...

From the factory, the exhaust valves on the 2001-2010 Lamborghini Murcielago only open fully at certain speeds and rpm, even with the sport exhaust selected. The RennTech Exhaust Valve Module (EVM) hands that decision to you: one button on the remote opens the valves...

Cruising in the 2003-2013 Lamborghini Gallardo, the factory exhaust flaps never fully open. The RennTech EVM changes that with a simple remote: press button 1 for fully open valves at any speed, press button 2 to go back to the factory settings.Features Opens the...

Cruising in the 2004-2009 Ferrari F430 Coupe / Spider, the factory exhaust flaps never fully open. The RennTech EVM changes that with a simple remote: press button 1 for fully open valves at any speed, press button 2 to go back to the factory...

From the factory, the exhaust valves on the 2004-2011 Ferrari 612 only open fully at certain speeds and rpm, even with the sport exhaust selected. The RennTech Exhaust Valve Module (EVM) hands that decision to you: one button on the remote opens the valves...

From the factory, the exhaust valves on the 2006-2008 Audi RS4 only open fully at certain speeds and rpm, even with the sport exhaust selected. The RennTech Exhaust Valve Module (EVM) hands that decision to you: one button on the remote opens the valves...

The 2006-2010 Audi S8 has a great exhaust note that the factory valve logic keeps muted most of the time. RennTech's Exhaust Valve Module overrides that logic by remote, so the valves stay fully open whenever you want, regardless of speed, rpm or drive...

The 2006-2011 ML 350 has a great exhaust note that the factory valve logic keeps muted most of the time. RennTech's Exhaust Valve Module overrides that logic by remote, so the valves stay fully open whenever you want, regardless of speed, rpm or drive...

From the factory, the exhaust valves on the 2006-2012 Ferrari 599 only open fully at certain speeds and rpm, even with the sport exhaust selected. The RennTech Exhaust Valve Module (EVM) hands that decision to you: one button on the remote opens the valves...

Cruising in the 2006-2013 Audi S3 / RS3, the factory exhaust flaps never fully open. The RennTech EVM changes that with a simple remote: press button 1 for fully open valves at any speed, press button 2 to go back to the factory settings.Features...

The 2006-2024 Audi R8 has a great exhaust note that the factory valve logic keeps muted most of the time. RennTech's Exhaust Valve Module overrides that logic by remote, so the valves stay fully open whenever you want, regardless of speed, rpm or drive...

The 2007-2008 ML 320 CDI has a great exhaust note that the factory valve logic keeps muted most of the time. RennTech's Exhaust Valve Module overrides that logic by remote, so the valves stay fully open whenever you want, regardless of speed, rpm or...

The 2007-2010 Porsche Cayenne GTS has a great exhaust note that the factory valve logic keeps muted most of the time. RennTech's Exhaust Valve Module overrides that logic by remote, so the valves stay fully open whenever you want, regardless of speed, rpm or...

From the factory, the exhaust valves on the 2007-2019 Maserati GranTurismo only open fully at certain speeds and rpm, even with the sport exhaust selected. The RennTech Exhaust Valve Module (EVM) hands that decision to you: one button on the remote opens the valves...

Cruising in the 2008-2014 Audi TT S / RS, the factory exhaust flaps never fully open. The RennTech EVM changes that with a simple remote: press button 1 for fully open valves at any speed, press button 2 to go back to the factory...