xbone replied to dbones's topic in Life ProblemsDon't run any 93 tune in that engine setup without a need for 93 fuel. The tuning ran his timing advance up too far to sustain and and had triggered the knock sensor till the computer triggered a reduced boost map. All I could tell him to do is change the oil, plugs, and hope a relearn doesn't catch the knock sensor go off before it maps back to 17+. Q: how important is it to get new plugs? Not as important as the oil but as important as checking the injectors. Just easier and more informative If he has a tuner he might have the right tool for it. But chances are he has to take it to a dealership for that.