If you have a minimal amount of mods, and your injectors have quite a few miles on them, try sending them to someone with a flow bench for cleaning. For a cleaning service plan on spending $15-25 an injector which is a lot cheaper than buying a new set. I have had injectors cleaned at RC Engineering, they did a good job and give you a little sheet of paper saying what was wrong with each injector and it's flow rate after cleaning. There are a lot of other places that can clean injectors too. A dirty injector which is dripping or not spraying what it should will impact power output and fuel economy.