With regard to a stand alone harness for and engine swap, I keep reading that speartech and others ”tune” for things like running a standard (non-pwm) fuel pump. Many are ditching the PWM pump and using a standard walbro 255lph that’s the same as an LS swap using ECM x1 pin 44 (a wire that sends a signal for a relay to operate the pump).
From what my tuner said there’s no way to tune that. So is the tuning that they’re speaking of just deleting the codes for not having a fuel pump module? Or is there truly a way to tune the ECM to control the relay that sends the signal?