[KingLT1]

Originally Posted by Megahurtz

You should command stock rail pressures but you can tell the low side to start hitting max sooner in the RPM range. You want the DI injectors to maintain ~4.8-5.2ms at stock rail pressures, on E80 in cold weather so that the rail pressure won't start dropping.

Then the Port System should take up the remaining slack. Adjustment of the torque model may be necessary but there is no reason the DI side should be having any fueling issues. I don't necessarily follow the 2HPSI MAF curve spreadsheet, but thats me. I tune it more like I would tune a meth car.