by suspendedHatch » Fri Apr 17, 2009 3:00 am 
			
			One small correction. It says "all VX's use 5 wire O2's". This isn't true. The 92 CA model VX and all 92-95 model VXs are 5 wire O2. However, 93-95 CA model VX's use a standard 4 wire O2.
How do you know if your car is California or federal? Read your emissions label (the sticker on the underside of the hood). It will say "this vehicle conforms to ________ model year standards" or something very close to that. And if that sticker is missing then you will have to interpret your VIN... on the other hand, just count the damn wires on your O2 sensor!