 The result is a weight reduction of as compared to the McLaren P1 GTR as well as a 40 percent increase in downforce.The P1 LM also features a larger twin-turbocharged V8 engine than the P1 and P1 GTR at with an 8,500 rpm red line.The P1 LM has a total power output of and of torque, with being delivered at 7,250 rpm and an additional from its electric motor.