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Discussion Starter · #1 ·
I put a cone air filter on my SS and now I'm getting this code the same day. Then the light went out for a week and today on the way to work it came back on. Why would a cone filter do this? Or is it a different problem? Should I put the original filter back in when I take it to the dealer for warranty works? Thanks

P0171 Fuel Trim System Lean -PCM
 

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BlackSS said:
I put a cone air filter on my SS and now I'm getting this code the same day. Then the light went out for a week and today on the way to work it came back on. Why would a cone filter do this? Or is it a different problem? Should I put the original filter back in when I take it to the dealer for warranty works? Thanks

P0171 Fuel Trim System Lean -PCM
the filter is the problem, put the factory filter back on, clear the code and it shouldnt pop back up.

hope this helps,

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Discussion Starter · #3 ·
So... Can't you run a cone air filter on them? What about a cold air intake? Can't run them either? Sounds kinda strange to me.
 
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