you wont get more than this ! its best you can get.. still better than most of cars of that era
if its JDM spec 94... Check the O2 Sensor And TPS ( Adjust If Needed) !
If Its PKDM...Only Thing You Can Do Is Adjust TPS As It Had Resistor Pod Instead Of O2 Sensor Which Is Fixed Usually Unless Its In Working Condition And Not Broken..Then You Can Adjust