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So my car finnaly threw a code today and it was p2195 excessivly lean. Does anybody know some reasons my car would be running lean. I noticed it has been running like crap and almost have no power until about 4,500 rpms. I have a race header w/ the o2 cheater on and I have cleaned my mass air flow twice and changed my plugs a few days ago and replaced my fuel filter 3 months ago. I was wondering if anybody knew if my o2 sensor cold be bad since it has no more cat to run off of and maybe the exhuast has made it fualt some how? [???:)]
 
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