Yea, it started probably about 2 weeks ago. I'd bet I put over 700 miles since it started but I do think it's gotten louder. At first, I wasn't that concerned and I didn't think it sounded like rod knock. I've gotten more anxiety about it as time has gone one. I don't have much experience listening to valve/injector noise but it just seems to be getting louder. I was hoping that I'd make it to the point that I have a garage and in the summer/fall daily my s2000 while tackling all the 4Runner stuff. I might have to bite the bullet and have a mechanic look at it and probably do the deferred maintenance stuff while I'm at it.