Has any one else tried this. It probably only works in the E67 ECM's. I have been losing pressure in my ZL1 on top end at 13 psi boost. Looking at the CTS-V tunes and the ZR1 tunes the voltage is cranked up in the Fuel System Min table. In my ZL1 it's set at 12.5-14.5 volts and the ZR1 are 14.0-15.2 volts, then the CTS-V is 12.0-16.0 volts. The axis is not defined in HPTuners but I assume it is Airflow Mode because it runs 0-64.
I cranked mine up to 15.5 volts in the airflow mode 36 thru 64 rows and went for a test drive and it WORKS! Voltage at wide WOT indeed went to 15.5 volts and my fuel pressure was better. I didn't want to go to far until I checked if anyone else has experimented with this. My fuel pressure could still be better because commanded is 65 psi but I got 55 psi now. But before FP was dropping to 43 psi. So this is like a Boost-a-pump built into the software. And could explain why people using a Boost-a-pump haven't been able to obtain the fuel pressure they want in the 2010+ Camaros. This table might help them, but I suspect it only works in the E67. Of course this boost the entire system voltage, not just the fuel pump and I don't want to burn anything up. But GM ran it up to 16 volts in the CTS-V so that much should be OK?
Here is the table I'm talking about. And a shot of the WOT run with 15.5 volts.