you said your low impedance inj are reading high impedance (2 ohm vs. 14 ohm)? if you have high impedance inj w/ a resistorbox on an ecu that requires a much lower resistance you probably burnt the inj drivers out on the ecu causing it to do stupid stuff. if it's dumping excessive amounts of fuel it'll get into the oil w/o your rings being bad since it's washing the cylinders. if it runs at like 10:1 afr or richer for some time your oil will smell like gas.