When travelling up a steep hill or when accelarating suddenly. i get a small loss of power and then returns again..So far I've cleaned TB, changed spark plugs,replaced fuel filter,replaced PCV..no CEL..could this be related to a bad ks?

 

it might be your ks but i think its normal to experiance alittle of this... how big of a loss is this? do you have an intake? because that can shift the power curve to the higher rpms

 

no mods at all..it's like a slight hestitation for a second and then engine returns to full power again.