When running this turbo motor on the dyno, we relied on a simple manual wastegate controller from Turbosmart. This graph shows both the boost pressure and back-pressure curves generated by both the standard intercooled turbo motor, and then after the introduction of the NX unit. Both the boost and back-pressure increased ever so slightly, and only in some areas. Measured at 6,000 RPM, there was almost no difference in boost, but a significant difference in power.
Graph 3: Turbo 6.0L-ATA Intercooled vs NX Cooling Ring (IATs)
