I just picked up a can of engine tuner that I was planning on using, not for any particular reason of poor running or anything like that. I figured it couldn't hurt and might make some improvements. My question is, I will be going out of town on a week long fishing trip. I was going to use the tuner tonight before I leave and figured I'd let it sit until I arrive at destination tommorow, then blow it out on the water. Should I wait until after my trip, because I don't want to have to change plugs until the end of the season. I noticed many posts relating to this tuner that says to change the plugs after using this stuff. Will i be okay using this the tuner now and not changing my plugs or should I really wait until I'm ready to change plugs?