Yeah, as Skiddins and others have already mentioned, you should run timing around 20~30 degrees. I personally run mine at around 25 degree (can timing) and then work my boost and turbo settings (LRP Flow). But for someone starting out with modified, I would leave the ESC in blinky settings and once you feel comfortable work in some ESC boost and timing.

I wouldn't even attempt to run 50 degrees of timing, that's insane. It will just generate too much heat to the motor and will cause the ESC to thermal.

What will happen when running modified is the ESC will get quite hot compared to your motor.