recently have done new stock injectors, new 925cc mpi injectors, new plugs (Denso IKH01-27). cleaned up the carbon build up a little, swapped the coil packs around, still misfires on cylinder 2 and 4. new oem pcv as well verse having the catch can. the car only misfires on WOT and has been like this since april when i ran vegas e85 (it tested to e57 max the month i was there)