need HELP

[luk909]

Car stutters, shakes, low idle, stalls, smell unburned gas. basically i was driving afew days ago, when i got onto the highway the car boosted to 12p just few, i wasnt flooring it just speeding up gradually, i then tried to pass a slower car and the car just started shaking and didnt want to pick up speed, black smoke started pouring out my exhaust and it wasnt speeding up, at low rpm or certain ones it would shack,(sounds like misfiring) just sounded and ran like crap, car does not speed up and boost wont go past 5p, like i said everything was fine just driving normally and all of a sudden this happenes.

Ive checked plugs, wires, and coil, im getting great spark into each cyclinder (i shocked myself plenty of times today)

checked codes and didnt have nothing wrong, p0125 thermostat and coolant i think i fixed that.
no timing issues
I dont know anymore, Im lost and losing my mind and tired of getting parts and returning them.

can anybody help?????????????????????

 

[LT1andDSM]

How did the plugs look and what kind are you running. Also you might want to check your base/ cam timing.

 

[luk909]

plugs looked like crap, like i was running rich, i ran ngks but i swaped them with champions just to see if there was a difference in peformance, i will be picking up new ngk's tues mornin,