dose anyone in here work on these things for a living

Ive got a 1994 lexus ls 400 with a strange problem has no power under load it set a code 15 and its got a new igniter and coil the timming is right check it 10 times went thru alldatas flow chart and it passed there test:banghead::banghead::banghead::banghead::rofl: :rofl::runaround::runaround::banghead::banghead::b anghead::banghead::banghead: