as everyone above is saying, just give her a birthday, new plugs, fuel filter, check the leads, air filter, oil and filter. injector clean, check timing, clean MAF, check TPS voltage, clean IAC ect.....

after that help her breathe, even if you just replace those shorty headers with some paccies, you will notice a big differance, if then you have some extra dosh get a cats back system.

then once the above is done then comes the $$$$$ side
bigger MAF ect.......