2009 Mercedes-Benz C 63 AMG tuned by RENNtech

The American tuning specialist RENNtech has introduced its own version of the 2009 Mercedes-Benz C 63 AMG compact performance sedan. Given how comprehensive the upgrade program is, I must admit that, well, that was quick.



Initially introduced to compete against the legendary BMW M3 (or, to be more precise, its current iteration: the E92) as well as the 2009 Audi RS 4 – a relatively new contender that was designed by VAG in order to finally squeeze its way into the niche of compact performance sedans- the 2009 Mercedes-Benz C63 AMG, which is available both as a sedan and a station wagon (a form factor that is more popular in Europe,) is fast, to say the least.

2009 Mercedes-Benz C 63 AMG tuned by RENNtech
2009 Mercedes-Benz C 63 AMG by RENNtech

However, some customers apparently think differently: otherwise there wouldn’t be a huge market for third-party performance upgrades, including after-market exhausts, reprogrammed ECU units and the likes. So, guys from RENNtech decided that they can make the German beast even faster by offering a more comprehensive (though clearly not holistic) upgrade program, effectively helping it to decisively crush the competition.

2009 Mercedes-Benz C 63 AMG tuned by RENNtech (wheel)

The C 63 AMG is quite popular on both sides of the Pond, so it’s no wonder that the American tuner revealed its tuning program for the 2009 Mercedes-Benz C63 AMG almost simultaneously with the German uber-tuner Brabus that currently offers its gorgeous Brabus B63 S package.

However, while Brabus usually takes the problem of exterior upgrades quite seriously, RENNtech, as it is customary for the American coachbuilder, decided to concentrate its attention on the vehicle’s performance (although there are some visual upgrades to the vehicle as well.)

Although the C63 AMG is quite a hell on wheels even in its original form with its massive power plant effortlessly churning out more than 450 horsepower at 6800 rpm and 443 ft-lbs. @ 5000 rpm, the tuner have managed to squeeze 20 per cent more power output from the car’s standard 6.2-liter AMG engine, getting 548hp and 785Nm (510lb-ft) of torque for your driving pleasure.

The feat was done by replacing the original exhaust system that was designed by persons more interested in saving the planet rather than in giving you the best driving experience of a lifetime with RENNtech’s own sports exhaust that features stainless-steel long-tube headers, track-oriented pipes and mufflers. I am not sure how legal it is in green states like, say, California, but it surely will be LOUD! Of course, new exhausts demands a a reprogrammed ECU, so, while going at it, guys from RENNtech have also pumped some more power under the vehicle’s hood with new fuel management algorithm.

By the way, when compared to the aforementioned tuning program from Brabus, the American version of the car looks much tougher with its engine producing 18hp more power and 68Nm (31lb-ft) more torque. Again, I can’t say the original C63 AMG looks like a complete pussy with its 457 hp and 443 lb-ft (600 Nm) of torque, but the upgraded vehicle will surely give the base one a run even for the money that RENNtech asks for all the gizmos that need to be installed.

Of course, more power requires more control, so the upgraded 2009 Mercedes-Benz C63 AMG has also received a set of new adjustable dampers with adjustable camber settings, a set of heavy-duty performance brakes with 15.2 two-piece rotors and RENNtech calipers, as well as a pair of brake ducts made of carbon fiber to help keeping those brakes cool and make them last longer.

Photos: RENNtech

See also: 2009 Mercedes-Benz C 63 AMG-based Brabus B63 S