I just bought a 93 rx and its got a down pipe, high flow cat, and pfs cat back, pfs purple computer, pfs medium ic, pfs cold air, and power pullys, well the thing is running rich to the point it makes me get headaches and ****. Also lots of pops, about everytime I left off the gas or back on the gas, or mostly at low rpms, sometimes at high rpms, Is this normal and I'm just going to have to live with it or is there something that can help get rid of the pops and fumes, I've had the o2 changed to a stock one and the plugs changed to 2-7's, and 2-9's, Is there something else that might be causing this. Could it be the ecu, when I unplug the pfs computer it rolls out puffs of black smoke, when I plug it back in with menu 100 idel set to -20, it seems to be better but still pops and has fumes all over the place.