If you want to get more power out of your Mercedes-Benz C63 AMG, a good custom tune can add upwards of 60 rear-wheel horsepower.
The W204 Mercedes-Benz C63 AMG Coupe is an awesome machine, with a naturally aspirated 6.2-liter V8 delivering 451 horsepower and 443 lb-ft of torque. That makes for one quick luxury coupe. But one of MBWorld forum members found that nothing more than a good engine tune can add significant amounts of power and he detailed his tuning experience on the forum.
Stock 2014 C63 AMG on the Dyno
This information was originally shared to the forum in a thread by member FactoryFast, who took his 2014 Mercedes-Benz C63 AMG to a local shop for a tune and a few runs on the dyno.
The first odd bit of information was that his AMG coupe already had a custom tune added to the engine computer. With nothing known about this tune, the shop removed it before making the baseline dyno run. In stock form, the 2014 C63 sent 365.8 horsepower to the rear wheels. When compared to the stock rated figure of 451 horsepower, this Benz is eating up about 18% of its power between the crankshaft and the tires.
Adding the Tune
Next, the shop added a custom engine tune and made another dyno blast with the C63 coupe. With the improved engine output, this AMG laid down a whopping 427.4 horsepower at the rear wheels. That is an improvement of 61.6 horsepower at the rear wheels, and when you factor in the 18% drivetrain loss–horsepower at the crank should be in the area of 521 horsepower.
In other words, with just a tune, this 2014 Mercedes-Benz C63 AMG coupe gained right around 70 horsepower with a custom engine calibration. Of course, results on the dyno will vary by location, weather, and plenty of other variables, but this thread shows that the W204 C63 has plenty of power left to be unlocked.
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