I went into JM Lexus this morning in Margate, FL for a wash. While I was waiting I spoke to my service guy and he told me that there are a few ecu updates in stock and since I have been on the list since March I could get it done right now. I was going to wait and have it done on my 5k service, but he said since I was there I might as well get it done. He said it would probably take a couple of hours so he gave me an RX300 as a loaner car. I just picked it up around 5pm and it rides much more responsive. Before I would sometimes really feel the hesitation while the car worked up speed, now as soon as i give it the gas it moves. I am glad I had it done today and did not wait, you can really feel a big difference in the driving. JM Lexus is a great dealership, if you live in South Florida definitely go see them.