Brain... yes it did cool down a bit with more power after the mods. I am running the os tr (e)spec japanese modle and it has a massive cooling head. I dont think i will go up to a larger head as the stock one is HUGE. I dont know where my needles are at but they are similar to yours. overly rich bottom end and almost lean hsn. On the weekend it was not idling very well so i am going to lean the bottom a tad more. Other than that it is a rocket.