RENNtech

The 2005-2010 SLR McLaren responds well to software, and RennTech has been writing engine calibrations since electronic engine management arrived in the mid-1980s. This HHT ECU Upgrade rewrites ignition timing, throttle mapping, fueling and boost control on the 5.5L M155 supercharged V8, so the...

If you want more from the 2006-2011 CLS 55 AMG Kompressor without touching the hardware, this RennTech HHT ECU Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 5.5L M113 supercharged, raising power and torque through the full...

The 2006-2011 CLS 500 responds well to software, and RennTech has been writing engine calibrations since electronic engine management arrived in the mid-1980s. This HHT ECU Upgrade rewrites ignition timing, throttle mapping, fueling and boost control, so the extra power arrives across the whole...

RennTech built its name in Florida tuning high-performance engines, and this HHT ECU Upgrade for the 2006-2011 CLS 63 AMG is the result of in-house dyno development on the 6.3L M156 naturally aspirated. Timing, throttle, air-fuel and boost tables are revised as one calibration,...

The 2006-2011 ML 550 responds well to software, and RennTech has been writing engine calibrations since electronic engine management arrived in the mid-1980s. This HHT ECU Upgrade rewrites ignition timing, throttle mapping, fueling and boost control, so the extra power arrives across the whole...

If you want more from the 2006-2011 ML 63 AMG without touching the hardware, this RennTech HHT ECU Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 6.3L M156 naturally aspirated, raising power and torque through the full...

RennTech built its name in Florida tuning high-performance engines, and this HHT ECU Upgrade for the 2007-2011 SL 63 AMG is the result of in-house dyno development on the 6.3L M156 naturally aspirated. Timing, throttle, air-fuel and boost tables are revised as one calibration,...

The 2007-2012 GL 320 CDI responds well to software, and RennTech has been writing engine calibrations since electronic engine management arrived in the mid-1980s. This HHT ECU Upgrade rewrites ignition timing, throttle mapping, fueling and boost control, so the extra power arrives across the...

RennTech built its name in Florida tuning high-performance engines, and this HHT ECU Upgrade for the 2007-2012 GL 550 is the result of in-house dyno development on this engine. Timing, throttle, air-fuel and boost tables are revised as one calibration, so the car pulls...

If you want more from the 2007-2013 S 63 AMG without touching the hardware, this RennTech HHT ECU Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 6.3L M156 naturally aspirated, raising power and torque through the full...

The 2007-2014 CL 63 AMG responds well to software, and RennTech has been writing engine calibrations since electronic engine management arrived in the mid-1980s. This HHT ECU Upgrade rewrites ignition timing, throttle mapping, fueling and boost control on the 6.3L M156 naturally aspirated, so...

If you want more from the 2008-2014 C 63 AMG without touching the hardware, this RennTech HHT ECU Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 6.3L M156 naturally aspirated, raising power and torque through the full...

If you want more from the 2010-2016 E 63 AMG without touching the hardware, this RennTech HHT ECU Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 6.3L M156 naturally aspirated, raising power and torque through the full...

The 2011-2014 SLS AMG responds well to software, and RennTech has been writing engine calibrations since electronic engine management arrived in the mid-1980s. This HHT ECU Upgrade rewrites ignition timing, throttle mapping, fueling and boost control on the 6.3L M159 naturally aspirated V8, so...

RennTech built its name in Florida tuning high-performance engines, and this HHT ECU Upgrade for the 2011-2014 SLS AMG GT is the result of in-house dyno development on the 6.3L M159 naturally aspirated V8. Timing, throttle, air-fuel and boost tables are revised as one...

The 2012-2015 ML 350 BlueTec responds well to software, and RennTech has been writing engine calibrations since electronic engine management arrived in the mid-1980s. This HHT ECU Upgrade rewrites ignition timing, throttle mapping, fueling and boost control, so the extra power arrives across the...

If you want more from the 2012-2019 SL 65 AMG without touching the hardware, this RennTech HHT ECU Upgrade is the cleanest way to get it. RennTech revises the factory calibration for the 6.0L M279 twin-turbo V12, raising power and torque through the full...

RennTech built its name in Florida tuning high-performance engines, and this HHT ECU Upgrade for the 2015-2017 S 600 / Maybach is the result of in-house dyno development on the 6.0L M277 twin-turbo V12. Timing, throttle, air-fuel and boost tables are revised as one...

The 2015-2024 S 65 AMG responds well to software, and RennTech has been writing engine calibrations since electronic engine management arrived in the mid-1980s. This HHT ECU Upgrade rewrites ignition timing, throttle mapping, fueling and boost control on the 6.0L M279 twin-turbo V12, so...

The 2016-2024 G 65 AMG responds well to software, and RennTech has been writing engine calibrations since electronic engine management arrived in the mid-1980s. This HHT ECU Upgrade rewrites ignition timing, throttle mapping, fueling and boost control on the 6.0L M279 twin-turbo V12, so...

Big power on the 4.0L M178 twin-turbo V8 needs more fuel than the factory high pressure pumps can deliver. RennTech's High Pressure Fuel Pump Upgrade for the 2016-2021 AMG GT raises fuel delivery so higher boost tunes and turbo upgrades stay safely fueled.Key details...

RennTech's Ignition Harness Kit renews the ignition wiring on the AMG M117 4-valve models, restoring a reliable spark on these rare AMG 4-valve engines.Key details This harness carries high-voltage spark from the coils to the plugs on 4-valve AMG M117 V8s. Wires, terminals and...

Heat soak is the enemy of a supercharged or twin-turbo Mercedes. RennTech's second-generation intercooler pump for the 2003-2006 SL 600 flows 8.7 GPM at 11.6 PSI, against about 3.0 GPM from the factory pump, for cooler, denser charge air.Features Flows 8.7 GPM at 11.6...

Heat soak is the enemy of a supercharged or twin-turbo Mercedes. RennTech's second-generation intercooler pump for the 2003-2006 SL 65 AMG flows 8.7 GPM at 11.6 PSI, against about 3.0 GPM from the factory pump, for cooler, denser charge air.Features Flows 8.7 GPM at...

Heat soak is the enemy of a supercharged or twin-turbo Mercedes. RennTech's second-generation intercooler pump for the 2003-2009 E 55 AMG Kompressor flows 8.7 GPM at 11.6 PSI, against about 3.0 GPM from the factory pump, for cooler, denser charge air.Features Flows 8.7 GPM...

Heat soak is the enemy of a supercharged or twin-turbo Mercedes. RennTech's second-generation intercooler pump for the 2006-2011 CLS 55 AMG Kompressor flows 8.7 GPM at 11.6 PSI, against about 3.0 GPM from the factory pump, for cooler, denser charge air.Features Flows 8.7 GPM...

Heat soak is the enemy of a supercharged or twin-turbo Mercedes. RennTech's second-generation intercooler pump for the 2007-2011 SL 65 AMG Black Series flows 8.7 GPM at 11.6 PSI, against about 3.0 GPM from the factory pump, for cooler, denser charge air.Features Flows 8.7...

Heat soak is the enemy of a supercharged or twin-turbo Mercedes. RennTech's second-generation intercooler pump for the 2007-2013 S 65 AMG flows 8.7 GPM at 11.6 PSI, against about 3.0 GPM from the factory pump, for cooler, denser charge air.Features Flows 8.7 GPM at...

Heat soak is the enemy of a supercharged or twin-turbo Mercedes. RennTech's second-generation intercooler pump for the 2007-2013 S 63 AMG V8 BiTurbo flows 8.7 GPM at 11.6 PSI, against about 3.0 GPM from the factory pump, for cooler, denser charge air.Features Flows 8.7...

Heat soak is the enemy of a supercharged or twin-turbo Mercedes. RennTech's second-generation intercooler pump for the 2007-2014 CL 63 AMG BiTurbo flows 8.7 GPM at 11.6 PSI, against about 3.0 GPM from the factory pump, for cooler, denser charge air.Features Flows 8.7 GPM...