Mercedes-Benz Custom In-House Tuning

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Product Description


Custom Tuning Starts at $895


Mercedes In-House Tuning

Using our own custom tuning tools, developed in-house, we started tuning on our own shop cars to develop what has become one of the industries top tuners of Mercedes-Benz.  We want to add power but not sacrifice your cars reliability.  We don’t stop at power alone.  Power is only one of our goals.  We also focus on low and mid-range gains as well as smoothness and throttle response.  At BrenTuning we pride ourselves on being perfectionists in our craft.  We are constantly developing new software and trying to better what is already being praised as one of the best.


Where Do We Concentrate Our Focus?

-Horsepower and Torque gains
-Improved driveability and throttle response
-Option to add “over-run burble”
-OEM reliability you have come to expect from AMG and BrenTuning
-Improved 1/4, 1/2 and one mile times and ET’s
-Specific track proven and tested mapping available


What Mercedes Models Do We Work With?

We work with MANY models.  We have broken them down to engine codes with estimated power gains.  If you’re unsure about which engine your vehicle has, call or email us so we can help you.

-M156 C63 – 80HP/40TQ
-M156 E/S/G/CLS – 40HP/40TQ
-M157 5.5 – 100HP/120TQ
-M177 4.0 – 90HP/120TQ
-M278 – 100HP/120TQ


A Couple Examples of Our Work


2012 C63 AMG, Stock vs Tuned vs Bolt-on and Tune



-15+ C43 (C400, C43, E400, CLS400) (19+ makes more power)



-12+ CLS550 and all Mercedes with 550 designation (same engine)




-12-16 CLS63 (E63, M36, Ml63, any 5.5 twin turbo cars)



-18+ E63 (W213) and any 4 liter twin turbo



These new W213 Mercedes E63S are luxury rocketships now programmable in 5 minutes per flash via OBDII. +70whp and +110wtq gain feels real good through the new 9speed.



Insane gains on a 2019 C43 AMG tune with the new digital dash and 9speed. +70whp +100wtq with a nice touch of an oem+ burble map. 433whp/532wtq not bad!



We offer a plethora of Mercedes / AMG platform services from diagnostic repair to full track oriented mod paths to performance. We can performance program all models with our in-house AWD dyno along with offering all Eurocharged / Renntech / Weistec parts and files as well. Our support range is from 2002-2019 including the newest 18-19 4.0 Twin turbo models. Since we are AMG junkies ourselves we test everything we sell in the real world and track.


Please Note

-This product is only to be used once instructed by our sales staff. For appointment booking and scheduling please contact our sales team directly via email at We will need to go over the modifications to the vehicle, goals, plans and more before booking any appointments.


-HP and TQ gains provided are contingent on a multitude of variables including, but not limited to: overall health of vehicle, quality of fuel provided, and modifications.


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Competition use only parts are clearly labeled as competition use only in the product listing page and may only be used according to the guidelines posted on our Emissions Notice to Customers in California page