I seem to be having problems with throttle response. I will gas it and sometimes it will take a few seconds to kick in. Ive done pretty much all I can to tune up the engine. Ive cleaned both upper and lower intake manifolds, cleaned MAF, K&N filter, new plugs, cap, rotor, transmission filter and fluid, of course oil and filter, reset the computer everytime i made an adjustment, greased throttle cable and linkeages, and some more im probably forgeting. Could it be my tps? Am I forgeting anything?