I have an update, I took some pictures. I heard some people say the R-Tune exhaust is what comes stock on Nismo cars. Is that true or not? Here are pictures of my exhaust, it is definitely not the r-tune exhaust. The tips do say Nismo on them but it is a single muffler.
Also I saw this black stuff on my exhaust but it is not oil, some was wet and I touched it, it was just dirty water... runoff from somewhere drains there? Or is something screwed up? I thought it was the rear diff bushing at first. I don't know.
