I have noticed since I bought my cressida over a year ago that when accelerating once the car reaches 2500 RPM there seems to be a momentary lag where one of two things happens. 1) if I am on it hard enough it will just lag for a second and then continue to wind out through the gear; or, 2) if I am light on the accelerator it will actually drop about 200-300 RPM and up shift, killing acceleration. I never thought much about it because I just figured it was some cheesy feature to promote fuel economy, as these models tend to do. But recently I replaced the fuel pump (unrelated issues), thinking maybe this would also cure the lag...it did not. Any ideas out there???