so i have quite a conundrum here, i just had a head rebuilt for my 280zx, bolted everything back together, replaced many parts, started it up and it ran like shit for a few days, went over some of the connectors and unplugged them and plugged them back in and the idle is great now, steady at 700, but there is 0 power, always the smell of gas, and if i want to keep up with a grandmah leaving a red light, i have to floor it to go ANYWHERE, and i mean it literally, i have to floor the gas pedal to get ANY kind of acceleration. it hesitates and backfires a bit while driving normally, just random pops and stumbles, everywhere i look i see people having similar problems except that they all have rough idle, my idle is very steady, it just has a very rich and throaty sound to it. brand new plugs, fuel pump, maf, and a few other things that have been replaces, can anyone help me? i will get a video up soon