What do you think cause this ,,,,,,,,,,,,,,,,

[Ryne @ CMS]

unfornuately that looks like detonation, what mods to the fuel system were done? what pump? what injectors?. How much timing? what AF?... i have tuned a lot of Tnetics kits, due to the small turbine housing of the turbo, backpressure is relatively higher, the more power and airflow you move the backpressure goes up and up. Consequently due to those reasons, you have to run them relatively rich on 91 pump (10.9-11.2 AF), and relatively low timing (10-13 degrees) to keep detonation at bay, and the more boost you run, the worst this gets. i have seen about 3 different 2010+ camaros POP with Tnetics kits, because the tuner didnt take any these issues into account. A lot of tuners see knock on logs, figure it "false" knock, de-sensitize the knock sensors, but it real knock. Unfornuately they need to get off their asses pull a plug and look at what is actually going on in the combustion chamber, too complacent with sitting in the car looking at logs..... OP, let us know if you need any help.