Question on tuners and P0401

deker

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So I just did an EGR cooler (slightly modified)/stock oil cooler on my '04 F250 (and added an IPR full flow coolant filter to help avoid it again in the future). Truck is otherwise stock and I'm fine with that, I don't want to make more power. I just have to kill the P0401.

What are my options, and what's the most cost effective?
 

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