I need to check my injectors too, car has around 182k on it. I’m guessing they aren’t spraying perfectly either.I ordered a full set of Delphi coils and E3 plugs today as well, we'll see who's coils last longer. I don't drive hard but the car lives at 3000rpm (80mph) or so on the interstate daily and there are some hills it has to climb, so boost does come into play.
Checked fuel trims while driving to work this morning. It sits at a steady -1 to -3%, which is consistent with my altitude (6500-5500ft along the trip). When throttle-off, jumps to -7% and then settles quickly back down to -1 and -3%. I am wondering if injectors need to be changed at this point with 228k on them (will be 237k when I do the big service). When I run a can of seafoam through the fuel system, I usually get a code for a rich mixture (used to handle it just fine), which to me indicates that they are beginning to spray poorly. They don't leak when pressure builds (they only lose 0.5psi every 15-30 secs when the fuel pump is shut off)
I typically drive pretty easy but with the stage 2 tune sometimes it’s hard not to rip into it.
Sent from my iPhone using Tapatalk