they all share the same 12v power from that 40A fuse , if its not the fuse then its something along the harness (I would look for wires or connectors...
I can see what probably feels like a misfire. Two things...the PE delay is likely bringing out the injector spray angle issue in a bad way. When you...
Tuning is definitely an art that requires precision and a good understanding of the variables involved. Speaking of precision and navigating changing...