First drive of the season after a few over the winter upgrades shows passenger AFR running a full point leaner than the driver's side.
Both STFT and LTFT run the same and both WBs track evenly in CL and only runs lean during PE.
Running a 58psi return system with a AEM-380 secondary pump which I can see kick on at 3psi of boost, about 780hp.
Stock fuel rail with crossover tube, fed from the stock pass side.
Suspected the passenger side rail might be getting starved for fuel but second guessing that because the variation shows immediately when dropping into PE even with injectors running only at 20% DC. Going to pull the plugs tomorrow for a look.
Looking for some advice.
Thanks