BMW 135i by Hartge

German based BMW Group tuning specialist Hartge first showed us off-the-shelf parts for the 1-Series coupe when it was first released, and then shortly followed with the aerodynamics kits. Now Hartge have developed an ECU upgrade for BMW's already potent 3.0-liter bitrubo engine in the 135i coupe releasing an additional 44hp. The result is a total of 350hp at 5660 rpm and 480 Nm (lb-ft 354) at