According to media player playback time, it took you 14 second to accelerate 0-60. This is exactly pretty much how my car is, and I'm also sure it is not normal. Lexus claims 7.9 seconds - we get double that. I'm yet to find the problem.

 

Lexus claimed a 7.9s 0-60 when it was new 12-17 YEARS AGO!

 

Well, thats right, which means that my 94 LS400 is not performing to its full potential,which means theres something wrong.

Furthermore, I notice that sometimes its pulls pretty hard off the line, and sometimes its rather sluggish... Completely random. Also, I feel that it pulls faster at part throttle than full throttle.