I have been taking my 2003 Infiniti G35 to Porshe and Lucky ever since I inherited it. This model had many known problems, especially with the oil consumption.Regardless of any known issue, Porshe already knows about it and has a solution for it. The last problem I had with the Infiniti was last summer during hot Arizona heat when my A/C was blowing hot air. I tried to brave it through but didn't even last a day. I called Porshe and he was able to get me in immediately. Turns out my compressor had gone bad and needed to be fixed. A year later and the A/C is still running great!
This is a great place if you have a Japanese car. They are very knowledgeable and will work with you no matter regardless of the issue!