The Mercedes-Benz 350 models despite having more volume than their AMG and V8 counterparts tend to receive less tuning attention. The amount of aftermarket products is fairly scarce but rather than telling someone to trade their car in there are options for 350 owners. Below is a 2008 W204 C350 that comes with the M272 3.5 liter V6 which has output of 268 horsepower from the factory. BrenTuning was able to coax quite a bit more out of the motor with just a tune.

How does another 25 horsepower and 35 pound-feet of torque at the wheels sound? That is a very nice tune only difference and gains are shown through the entire curve.

Graph and video below.

Click here to enlarge