http://us.lexusownersclub.com/forums/index...showtopic=26100
Upon installing this onto my 94 LS400 I was able to feel a huge amount of difference. My transmission before used to have a sudden lag when the gears switch, but after installing this unit, I instantly noticed the increased ability from the switching of the gear ratio. The transmission now switches more efficiently, not to mention the quicker responsiveness of going through gears. I just installed it over the weekend so I haven't noticed saving any fuel yet (since I haven't driven that much) but I'll keep y'all posted.