I am looking for a little help on replacing my fuel injectors. I have a 2003 WRX with about 130,000 miles on it. I keep getting check engine lights for lean fuel on rail 3 and 4. So I am assuming I need to replace my fuel injectors and I want to use the same size injectors that it came with. I am going to do it myself ... I have done everthing on it since day 1 so i feel pretty confident in doing it. I just have a few questions. What size are the stock injectors? Do I need to have the fuel system remapped if I am using the same stock size injectors? And any tips or advice would be greatly appreciated on the project. Thanks.