I think that was the same day I dynoed, and came up with a 169.8 and then a 169.9. My only mod at the time was an open-element K&N. Car had close to 60k on it at the time too I think, so maybe they get better with age?
Anyway, this doesn't really respond to this thread in a helpful way, but I saw my name so I figured I'd chime in.