X2! DO NOT set your PCM back to stock before a smog test!
The "When to return to stock" question is covered in this Q&A in the f150Online forum: http://www.f150online.com/forums/chi...unes-read.html
Read through the whole thing. It may answer some other questions you have at the back of your mind.
- Jack
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2024 F150 Platinum SCrew 3.5L PowerBoost FX4, Peragon Tonneau Cover, LineX Bed, 35% Window Tint on All Sides and Rear, Full Nose Paint Protection Film, Husky Mud Guards, Lasfit Floor Liners, VIOFO Dash Cam
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