I'm hoping that someone can help me. I have an 04 titan xe non bt 4x4 and I have noticed recently that it sounds like my injectors are making alot of noise. Am I going crazy or is this a real problem? The truck runs good but I have only 5000 miles left on my warranty and wonder if I need to take it in to the dealer. I hate to wait and then have a problem after the warranty is up. Has anyone else had this problem? I was running 87 oct in it and went to 92 because the truck ran so much better power wise and the book said to use it. I appreciate any help from you guys and am also looking for someone in kansas city that can do the 2* advance and I will be more that happy to pay for it.