The BMW M3 and M4 are very popular for tuning companies. They know that they can earn money because a lot of people own a M3 or M4. Alpha-N Performance went working on the M4 and they came up with a few upgrades.
Real fanatics of the M3 will know Alpha-N Performance. Back in the days they made a replica of the CLS Airbox which was available for the normal E46 M3. Now they're back with a power upgrade for the M3 and M4. They boost the power ful 431 to a stunning 520 hp and over 600 Nm of torque thanks to a renewed ECU and the famous EVOX box. A lower back pressure for the stainless steel exhaust should produce an extra 5 hp.
Alpha-N Performance also made a few carbon fiber upgrades. You can order two different front spoilers. There's a version that's non-adjustable and costs 999 euros and there's an adjustable version that will cost you p to 1.999 euros. Both versions will increase the downforce on the front axle at higher speeds. At the back you can choose between a diffuser with small or big fins. Next to that you can install a big spoiler at the back of the car.
