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Old 06-19-2013, 10:28 AM   #1
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Lean

I got two codes one each for lean in each bank. What could it be and what can I do to fix it
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Old 06-19-2013, 11:55 AM   #2
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Check your air intake after the MAF, I know when I had that code it was because the coupler on my CAI was loose and letting air in after the MAF.
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Old 06-19-2013, 03:09 PM   #3
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I should check that on mine, does anyone know if a 4.2 stroker would run lean if I was still running the original 3.8 tune?
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Old 06-19-2013, 06:31 PM   #4
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Quote:
Originally Posted by lemons95 View Post
I should check that on mine, does anyone know if a 4.2 stroker would run lean if I was still running the original 3.8 tune?
I would think so. The 4.2 was an f-150 engine so my guess would be that there was more gas pumping through its lines. Trucks definitely need more gas haha
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Old 06-20-2013, 12:41 PM   #5
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Slightly lean, the load scales would be off due to the increased displacement, but on a stock headed and cammed motor it wouldn't be enough to mess with anything really, at least not enough to trip sensors
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