870 turbo overspeed cel

[marek4792]

40 is maximum. about the code on mine it only happens above 6500 feet. And my boost is around 37-40 but if you are less than 550hp your boost should be around 35 substained. You could have a small boost or exhaust leak as well. I actually watched on insite how the turbo rpm increase 2k rpm a second and then it jumped from 120k exact to over 150k rpm in a 2 second window. I was reassured by Uni that a 30k jump that quickly would destroy a turbo so I question the valadility of the data, and according to the troubleshooting tree it points to a sensor/harness issue or even electrical interference.