Hey guys,i have a 33GTST with ecr33 PFC doing something similar,but under WOT.Whenever i take off in first,rev it to around 7000 change to second,flaten it again its like it starts to rev then loses power for a moment then comes on strong again.Revs clean through all gears,no missing or backfiring at high rpm.Have had Matt Spry at PITS in the car with me with PC hooked up and couldn't figure out what it was.Changed AFM,plugs.checked coilpacks,no difference .Also when uder minimal load in 2nd an 3rd has a little hesitation at 3000 rpm.Car has slight mods:FMI,fuel pump,hiflow panel filter,12 psi boost from turbosmart boost tee.