Yes, that's what the limp mode is, much the same troubleshoot tree as low power. When the ECU sees certain parameters from a variety of inputs, it won't allow full go. May not be an actual boost component. Start with simple stuff like vacuum hoses, malfunctioning turbo actuator, sticky vanes, loose piping, the big ones.
From wee to wow – the Audi A1 with the smallest 1.2 TFSI engine (89 HP, 160 Nm) easily bounds over the 100 HP mark with 102 HP (as well as 192 Nm torque) even with our entry-level chip, the RaceChip S. A Q7 with 4.2 TDI and standard 340 HP comes to life with a RaceChip GTS to feature 393 HP.
2KTUSC.