This 2010 Mini Cooper arrived with the MIL on and a complaint that the vehicle lacked power since having the air intake system upgraded. The vehicle had numerous faults stored in the DME.
During the initial road test, there was no output from the MAF sensor or the B1S1 Lambda sensor. The FMEM saw this and the other faults and limited boost from the turbocharger. Scott Brown takes you through the diagnostics and repair.