How much boost can a G diverter hold?

Paul_c

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As the title suggests, I was wondering if anybody knows how much boost (psi) a New G revision diverter valve can hold?
I've upgraded from D to G on my A1 1.4TFSI after a remap which also proved too much for my stock actuator... Now running forge with yellow spring (15psi).
Between 2,5-3k rpm (peak torque) boost is spiking to 19psi and I can hear the diverter, well, diverting! It's been suggested that it can't handle the pressure and is letting to causing the increased psi to be generated by the turbo.

Any ideas?