I have had my turbo 5.3 tuned for a few years now and it has run very well. I originally tuned it to run a constant 58 psi, so my VE table is based off of that. I recently switched my fuel system around to run a boost/vac referenced regulator setup and have been tuning around that. Injector data is all set up correctly (0 KPA value across the board in IFR) and the car ran excellent with very minimal tune changes during normal cruising. Under boost however, as one would expect, it runs EXTREMELY rich considering it is now adding 15 psi of FP on top of the normal 58 psi. I'd hate to start from square one re-tuning the boost area of my VE table, so I'm wondering if there is an equation or chart someone made up that will convert the necessary fueling adjustments based on the increase in fuel pressure?