RennTech ECU Flashing

There are 2 types of ways to flash a vehicles ECU also known as the DME to gain improved driveability and performance. The first is via the OBDII port on your vehicle, and the second is by removing your ECU to flash on the "bench".

OBDII ECU Tuning is the ability to read and write new performance calibration via the OBDII port. There are many different tools that allow you to do this. Once a file is read, a new performance tune is done and then flash back to the car via the OBDII port. Some companies like Cobb Tuning store all this info on a handheld device so the tuning maps are available instantly. OBDII tuning does not work for all vehicles. Some vehicles have to be bench flashed because of tuning encryption.

Many ECU's can only be flashed in "boot mode" which requires the ECU to be removed from the vehicle. Once removed from the vehicle, the cover is taken off and we utilize electronic bungy pins to connect to the circuit board to read the cars data. The ECU must be sent in to us which we can then bench flash the car and send the ECU back out to you.

#1 priority is our customer service to you! Our tuning is used worldwide. We can provide you a tuned file no matter the environment you live in. Upon ordering of this ECU Flash Tune, you will be required to send in your ECU. Once we receive the ECU and program it, we will ship it back to you via the method you select at checkout. This ECU cannot be flashed via the OBDII port. This requires the ECU to be mailed in to us to be benched flashed. Bench flashing requires the ECU to be opened. We DO NOT solder or modify your board in any way. Using a electrical contact pins, we tie into the boards programming mode to read and write the file. We do store your stock file if you ever want to revert. Because the ECU must be removed and opened, if you are concerned with warranty, you may want to speak with your dealership. Removing the ECU takes about 20 mins.

RENNTECHs philosophy has always been to produce products without compromise, and that dedication continues to this day. True to Mercedes-Benz quality, RENNTECH cars are designed to be fast yet refined. Regardless of specification, they run faultlessly, idle smoothly, and have reliability and ease of maintenance comparable to the stock Mercedes-Benz. This attention to detail has made RENNTECH the choice of some of the most discriminating enthusiasts in the world.

View all RennTech ECU Flashing products

	Name	View more
	RennTech ECU Hand Held Tuner Mercedes-Benz CLK 55 C209 04-09 Model Number: ECU-TU.54.209.CLK55 View Price ...
	RennTech ECU Upgrade Mercedes-Benz S55 AMG 01-02 Model Number: ECU:54.220.S55 View Price With custom software that is at the cutting edge of tuning technology, RENNtech has inspired some of the most advanced software upgrades on the market today. RENNtech customers experience improved throttle response, more aggressive transmission shift patterns, increased speeds, and (of course) more power. Designed to optimize every aspect of a vehicles performance, increasing low-end torque for better off-the-line performance and enhancing fuel economy in some applications.Features:16 HP gain20 ...
	RennTech Stage 1 ECU Upgrade Mercedes-Benz C63 AMG 08-14 Model Number: ECU:54.204.C63 View Price RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!This 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 RennTech tuning software for Mercedes offers signi...
	RennTech ECU Upgrade Mercedes-Benz CLS500 2006 Model Number: ECU:54.219.CLS500 View Price RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!This 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 RennTech tuning software for Mercedes offers signi...
	RennTech ECU Hand Held Tuner Mercedes-Benz CL 65 C215 01-06 Model Number: ECU-TU.54.215.CL65 View Price With custom software that is at the cutting edge of tuning technology, RENNtech has inspired some of the most advanced software upgrades on the market today. RENNtech customers experience improved throttle response, more aggressive transmission shift patterns, increased speeds, and (of course) more power. Designed to optimize every aspect of a vehicles performance, increasing low-end torque for better off-the-line performance and enhancing fuel economy in some applications.Features:20 HP gain14 ...
	RennTech ECU Hand Held Tuner Mercedes-Benz CL 55 C215 01-06 Model Number: ECU-TU.54.215.CL55 View Price RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!This 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 RennTech tuning software for Mercedes offers signi...
	RennTech ECU Hand Held Tuner Mercedes-Benz S 600 W220 99-05 Model Number: ECU-TU.54.220.S600 View Price With custom software that is at the cutting edge of tuning technology, RENNTECH has inspired some of the most advanced software upgrades on the market today. RENNTECH customers experience improved throttle response, more aggressive transmission shift patterns, increased speeds, and (of course) more power. Designed to optimize every aspect of a vehicles performance, increasing low-end torque for better off-the-line performance and enhancing fuel economy in some applications.Their proprietary ECU ...
	RennTech ECU Upgrade Mercedes-Benz E430 98-02 Model Number: ECU:54.210.E430 View Price RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!This 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 RennTech tuning software for Mercedes offers signi...
	RennTech ECU Hand Held Tuner Mercedes-Benz CL 600 C215 01-06 Model Number: ECU-TU.54.215.CL600 View Price With custom software that is at the cutting edge of tuning technology, RENNTECH has inspired some of the most advanced software upgrades on the market today. RENTECH customers experience improved throttle response, more aggressive transmission shift patterns, increased speeds, and (of course) more power.Designed to optimize every aspect of a vehicles performance, increasing low-end torque for better off-the-line performance and enhancing fuel economy in some applications.Features:30HP gain16 LB-...
	RennTech ECU Upgrade Mercedes-Benz G500 98-08 Model Number: ECU:54.463.G500 View Price With custom software that is at the cutting edge of tuning technology, RENNtech has inspired some of the most advanced software upgrades on the market today. RENNtech customers experience improved throttle response, more aggressive transmission shift patterns, increased speeds, and (of course) more power. Designed to optimize every aspect of a vehicles performance, increasing low-end torque for better off-the-line performance and enhancing fuel economy in some applications.Features:22 HP gain20 ...
	RennTech ECU Hand Held Tuner Mercedes-Benz CLK 63 AMG Black Series C209 04-09 Model Number: ECU-TU.54.209.CLK63BS View Price RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!This 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 RennTech tuning software for Mercedes offers signi...
	RennTech ECU Upgrade Mercedes-Benz S550 07-11 Model Number: ECU:54.221.S550 View Price With custom software that is at the cutting edge of tuning technology, RENNtech has inspired some of the most advanced software upgrades on the market today. RENNtech customers experience improved throttle response, more aggressive transmission shift patterns, increased speeds, and (of course) more power. Designed to optimize every aspect of a vehicles performance, increasing low-end torque for better off-the-line performance and enhancing fuel economy in some applications.Features:16 HP gain19 ...
	RennTech ECU Upgrade Mercedes-Benz ML350 06-11 Model Number: ECU:54.164.ML350 View Price The RennTech proprietary ECU upgrade for the Mercedes M157 engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability. Their ECU tune offers the biggest performance gains on the market; increasing performance from 556 HP and 550 lb/ft torque, to an astonishing 669 HP and 734 lb/ft at the crank! This allows the CLS 63 to run the quarter mile in an impressive 11.37 seconds at 125.01 mph with 0-60 mph coming in a mere 3.4 ...
	RennTech ECU Upgrade Mercedes-Benz CL63 AMG 07-11 Model Number: ECU:54.216.CL63 View Price With custom software that is at the cutting edge of tuning technology, RENNtech has inspired some of the most advanced software upgrades on the market today. RENNtech customers experience improved throttle response, more aggressive transmission shift patterns, increased speeds, and (of course) more power. Designed to optimize every aspect of a vehicles performance, increasing low-end torque for better off-the-line performance and enhancing fuel economy in some applications.Features:16 HP gain20 ...
	RennTech ECU Upgrade Mercedes-Benz S500 00-02 Model Number: ECU:54.220.S500 View Price With custom software that is at the cutting edge of tuning technology, RENNtech has inspired some of the most advanced software upgrades on the market today. RENNtech customers experience improved throttle response, more aggressive transmission shift patterns, increased speeds, and (of course) more power. Designed to optimize every aspect of a vehicles performance, increasing low-end torque for better off-the-line performance and enhancing fuel economy in some applications.Features:22 HP gain20 ...
	RennTech ECU Upgrade Mercedes-Benz E55 AMG 98-02 Model Number: ECU:54.210.E55 View Price With custom software that is at the cutting edge of tuning technology, RENNtech has inspired some of the most advanced software upgrades on the market today. RENNtech customers experience improved throttle response, more aggressive transmission shift patterns, increased speeds, and (of course) more power. Designed to optimize every aspect of a vehicles performance, increasing low-end torque for better off-the-line performance and enhancing fuel economy in some applications.Features:20 HP gain14 ...
	RennTech ECU Hand Held Tuner Mercedes-Benz CLK 500 C209 04-09 Model Number: ECU-TU.54.209.CLK500 View Price RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!This 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 RennTech tuning software for Mercedes offers signi...
	RennTech ECU Hand Held Tuner Mercedes-Benz ML 63 W164 06-11 Model Number: ECU-TU.54.164.ML63 View Price With custom software that is at the cutting edge of tuning technology, RENNtech has inspired some of the most advanced software upgrades on the market today. RENNtech customers experience improved throttle response, more aggressive transmission shift patterns, increased speeds, and (of course) more power. Designed to optimize every aspect of a vehicles performance, increasing low-end torque for better off-the-line performance and enhancing fuel economy in some applications.Features:20 HP gain14 ...
	RennTech ECU Upgrade Mercedes-Benz CLK500 02-06 Model Number: ECU:54.209.CLK500 View Price With custom software that is at the cutting edge of tuning technology, RENNtech has inspired some of the most advanced software upgrades on the market today. RENNtech customers experience improved throttle response, more aggressive transmission shift patterns, increased speeds, and (of course) more power. Designed to optimize every aspect of a vehicles performance, increasing low-end torque for better off-the-line performance and enhancing fuel economy in some applications.Features:22 HP gain20 ...
	RennTech ECU Upgrade Mercedes-Benz CLS63 AMG 07-10 Model Number: ECU:54.219.CLS63 View Price With custom software that is at the cutting edge of tuning technology, RENNtech has inspired some of the most advanced software upgrades on the market today. RENNtech customers experience improved throttle response, more aggressive transmission shift patterns, increased speeds, and (of course) more power. Designed to optimize every aspect of a vehicles performance, increasing low-end torque for better off-the-line performance and enhancing fuel economy in some applications.Features:40 HP gain22 ...
	RennTech ECU Upgrade Mercedes-Benz GL550 06-11 Model Number: ECU:54.164.GL550 View Price RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!This 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 RennTech tuning software for Mercedes offers signi...
	RennTech ECU Upgrade Mercedes-Benz S430 99-06 Model Number: ECU:54.220.S430 View Price RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!This 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 RennTech tuning software for Mercedes offers signi...
	RennTech ECU Hand Held Tuner Mercedes-Benz SL 500 R230 03-06 Model Number: ECU-TU.54.230.SL500 View Price RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!This 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 RennTech tuning software for Mercedes offers signi...
	RennTech ECU Hand Held Tuner Mercedes-Benz C 63 AMG W204 08-14 Model Number: ECU-TU.54.204.C63 View Price RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!This 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 RennTech tuning software for Mercedes offers signi...
	RennTech ECU Hand Held Tuner Mercedes-Benz CLS 63 AMG C219 05-10 Model Number: ECU-TU.54.219.CLS63 View Price With custom software that is at the cutting edge of tuning technology, RENNtech has inspired some of the most advanced software upgrades on the market today. RENNtech customers experience improved throttle response, more aggressive transmission shift patterns, increased speeds, and (of course) more power. Designed to optimize every aspect of a vehicles performance, increasing low-end torque for better off-the-line performance and enhancing fuel economy in some applications.Features:20 HP gain14 ...