turbocivic22

hi im having a problem with my turbo h22a. i took it out the other day and it was running fine but after a little while the engine would start to stutter. it doesn't really do it that bad but its noticeable, there is also a loss of power. it feels like the power just levels out and doesn't increase. also it only starts doing it around the 5000 rpm range.
im thinking it might be my spark plugs or the wires they could be bad but im not sure. any help would be appreciated thanks