I have a 2015 Ram 1500 Big Horn 5.7 Hemi that has developed a clicking sound. I've heard it is the exhaust manifold bolt broken. Is that covered under the powertrain warranty? Also, it is my only vehicle so i have no choice but to drive it. is it safe to drive for at least another week till i can get it to a dealer? and will having a k&n mass air filter void the warranty?