I have a 04 Z with 9000 miles. While the AC seems to work fine, but I just dont think it works that great compare to my 98 Celica. Do you guys notice a weak AC system also or are the new cars like that now? The 98 has R134a, not R12. Is there anyway to improve the efficiency? I checked the air that comes out, it was still blowing 48-50 degree. What do you guys think? I gotta check the Celica and see what it is blowing