This car has loads more juice in it.
BMW - and Mercedes, for that matter - is these days better known for its engine building than its chassis tuning. That's not to say that its cars no longer handle well, but the focus in Bavaria seems to have shifted to favor the powerplants more. We're not complaining too much because these engines are truly spectacular. Not only do they provide exceptional performance from the factory, but they're highly responsive to tuning too. Evidence of this can be seen in the video below, where a BMW M3 Competition xDrive, tuned by Infinitas with a Stage 1 kit, seems to only slow its acceleration once the limiter forces it to.
The car reportedly now produces an astonishing 720 horsepower and 700 lb-ft of torque, up from the standard engine's output of 503 hp and 479 lb-ft. As standard, BMW says that the regular car is capable of a top speed of 155 mph, while the removal of the limiter increases this to 180 mph, which is apparently just another limiter. We say that because the car in the video shows an indicated top speed of as much as 314 kph, which translates to 195 mph. Of course, indicated speed is never 100% accurate, and sadly, the YouTuber did not have the Dragy performance meter active when running into the limiter, so we can't verify the actual speed.
The Dragy was active for a run from 100-200 kph (62-124 mph), which the car achieved in just 6.2 seconds. Whatever the true top speed, it seems that the car still has plenty of ability left in it, and we'd love to see what the car could do with no restrictions. More impressive than the speed is the fact that the car produces so much power from such minor modifications. A Stage 1 tune typically indicates no hardware upgrades, only a software tune. In this case, it seems that the software has been supplemented by an Akrapovic adaptive exhaust system, but even so, the power produced is phenomenal. Imagine what the M3 will manage with a set of intakes and downpipes and a more aggressive tune.