Swiss aftermarket specialist Sportec has developed an upgrade program for the 2012 BMW M135i and they are showcasing it at the 83rd edition of the Geneva Motor Show. They worked on a two-stage kit for the potent BMW 1-Series model which kicks off with a software optimization for the stage 1 kit lifting the output from the stock 320 HP (235 kW) to 355 HP (261 kW). The torque figure has also increased to 510 Nm (376 lb-ft), up from the standard 450 Nm (332 lb-ft). For more money, clients can opt for the stage 2 kit which costs 4,300 EUR and increases the output to 370 HP (272 kW) thanks to a downpipe and a 200-cell catalyst.
With the stage 2 kit installed, the BMW M135i prepared by Sportec will need 4.6 seconds in order to perform the 0-62 mph (0-100 km/h), making it 0.3 seconds faster than the regular model. While the stock M135i is capable of reaching an electronically-limited top speed of 250 km/h (155 mph), the one prepared by Sportec will go all the way up to 275 km/h (171 mph), a top speed which is also limited.