Mcchip-DKR Takes BMW M4 from 431 HP to 534 HP with a Simple ECU Tune

The incredible potential of the new S55 engine under the bonnet of the BMW M3 and M4 models has been discovered a while back. As a matter of fact, not even a few months passed since the unveiling of the cars before various tuners out there already had kits for their engines.
Mcchip-DKR tuned M4 8 photos
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However, the best way to go about it is to reflash the ECU maps and not use a piggyback tune. That’s if you want to use your car on the long run, of course. If you don’t plan on using it for more than a year or so, you can try other means of increasing power as well.

The problem is, the ECUs are protected by BMW and getting past that protection level might be a bit tricky. As a matter of fact, some claim that the latest versions are nearly impossible to break and yet tuners seem to have gotten past the protection anyhow.

One of the companies claiming they can reflash the new ECU aboard the M3 and M4 models is Mcchip-DKR from Germany. In order to show off their skills and the amount of power they can extract from the 3-liter biturbo inline 6-cylinder engines, they just posted the results achieved by an M4 on their dyno.

According to them, the power levels went up from 431 HP to 534 HP. Torque was also drastically improved from 550 Nm (406 lb-ft) to 672 Nm (496 lb-ft) of torque.

The best bit about it though is that it takes only 3 to 4 hours to install, and it doesn’t need any additional parts according to the tuner. Too good to be true? Possibly. That’s because we don’t know how the engine and adjacent parts will handle the extra grunt. Furthermore, there’s no word about a possible warranty from the tuner whatsoever, and that might be worrisome for potential customers.


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