Jat007

Hello, I am new to this site; I am also new to the luxury Lexus line up as well. I recently purchased an 02' GS300 with 128K miles on the car. The car runs and drives great and quiet. However, I've noticed that the car lack of passing power. It takes about 7-10 seconds before I can get from 45 to 60 MPH. The gas mileage is average and there's no missing or hissing sound of anything with the engine. The engine does not use any oil that I can tell for the last 3K miles. There is one CEL code and it was the P0446 - As far as I can tell, this code is related to the Evap system. Has anyone experienced this symptom or know of anyone else had this issue? I would like to fix the issue with lack of passing power. Please help!! Thank you, Jay