I've never had any car I've owned ECU tuned, but I'm considering getting it done to my LC at some point. Of course first I'm going to have to find out if anyone has successfully ECU tuned the LC500 and if anyone near me can do it (properly, with a dyno). And if the dealership would ever notice. Does anyone have any opinions or information? From what I've seen it may be possible to get a lot more pops and crackles too.