I have had my complete exhaust for about 2 months. The past week or so i have noticed a little power loss when i am under load in overdrive and even just normal driving. Everything seems fine at WOT. My plugs, wires, and coils are all good. I think the exhaust guy replaced my o2's when he put the exhaust in. My fuel filter was never changed by the previous owner and i have about 90k on my car so i am going to change that and my pvc valve or whatever its called. Is there anything else i could do to restore lost power? I have k&n filter and they are clean.
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