Available at Renntech is our CLA45 AMG Piggy Back ECU. Details are below

Please contact me with any questions or to place an order.

Our proprietary ECU upgrade for the Mercedes M133 engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability.
The RENNtech tuning module allows the user to change the performance level and gives the ability to set different performance levels running both higher or lower boost compared to delivered settings. This gives you power on demand or economy when you want with smooth torque delivery and performance throughout the entire powerband. This also allows the user to compensate for fuel quality and places of extreme climate or to adjust for higher octane fuels and the added performance of racing blends.
Our tuning module for the CLA 45 AMG is plug & play, delivered with a specific M133 engine harness to make installation simple and requires no cutting or splicing of wires.


Acceleration numbers: (Numbers based on normal settings and pump gasoline)

• 0-100 kph in 4.0 seconds with race start (stock 4.6 with race start)
• 0-200 kph in 14.5 seconds with race start (stock 17.6 with race start)

without race start:

• 0-100 kph in 4.3 seconds
• 0-200 kph in 14.9 seconds

Power figures: (Numbers based on normal settings and pump gasoline)

• 414hp @ 6250rpm (361whp)
• 533Nm torque @ 4000rpm (393 lbf ft)

Gains: (Numbers based on normal settings and pump gasoline)

• Horsepower: +50hp at 5500rpm, +40hp at 6100rpm
• Torque: Average plus of 70Nm (52 lb/ft) between 3250rpm and 5500rpm.