My car has lost alot of power as well as it idles really bad as well as it takes a horible long time to start it just keeps cranking and then finally it turns over i just replace the coils, plugs, and plug wires, and still same error presumes as well i have a rear o2 sensor. as well as this is the big problem i dont know why it sounds like this when im driving aggresive http://www.youtube.com/user/LTBrownco8

 

What year? how many km's on your car?
Have you checked your cat converter? Cleaned your air filter and MAF sensor?

 

Retitled, to reduce vagueness and/or ambiguity.

S

 

shes 04 57***miles have aem cold air intake and cleaned maf sensor r

 

check the cat. Probably clogged.
If it's fine, then you probably have low compression...
Could be other things, but there are a lot of issues that cause these types of symptoms, and it's difficult to diagnose over the internet.

 

I think the rest of the post ensure continuity on that portion... Haha


But yeah, like others said, check your cat. If it glows red hot after a run, it's probably clogged. If not, your engine could be toast.