so, running 1.9 bar~27psi with meth/water, just got green turbo. now my injector duty cycle is upto 93-4%. with evo9 turbo, duty cycle was around 85%.

so, what size injector do i need to get?
any input will be very appreciated.

 

If the IDC is at 95% with your current setup, then no need to upgrade. It seems that the duty cycle calculated by the ECU where the injectors go static is about 115%, so you have about a 20% safety margin.