Have above vehicle, got real sluggish, no power, replaced plugs, wires, fuel & air filter, checked compression, cleaned MAF sensor, no improvement, jacked up car, put infrared gun on cat at 2750 rpm, pegged @ 900 deg. instantly, we replaced cat, still runs like crap, checked coolant temp. sensor, appears fine, what is ohm reading supposed to be on TPS at closed throttle, currently reads 8.25 closed to 1.25 at WOT, what should I be seeing?