MR Car Design Maserati Quattroporte The aftermarket specialists from MR Car Design launched today a discreet tuning program for the Maserati Quattroporte. MR Car Design's Maserati Quattroporte program includes a power increase, new rims and a new exhausts system. Through and ECU remap, MR Car Design engineers increased the output of the Quattroporte by 30 hp for a total of 430 hp and 480 Nm of torque. At the same time, they also removed the top speed limiter that comes with the factory Maserati Quattroporte. For the soundtrack, MR Car Design fitted the Maserati Quattroporte with a custom dynamic pressure-optimized stainless steel exhaust system featuring four 76 millimeter tailpipes. MR Car Design's Quattroporte is black with tinted windows and sits on 9x22 inch Vossen rims with 245/30R22 tires at the front and 10,5x22 inch wheels with 295/25R22 tires at the rear. To be able to fit those wheels on the Quattroporte, MR Car Design used 15 millimeter spacers for the rear axle. The car has also been lowered by 20-30 mm through the use of H&R springs. MR Car Design did not yet announce the price for their Maserati Quattroporte upgrade kit.