Any ideas on MAF?
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Old November 8th, 2010, 11:27 PM   #1
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Any ideas on MAF?


ive got a upgraded 4inch almunium cold air intake on my 4.6 liter using the stock mass air flow sensor and now my engine light was tripped, I also have a tune in it and have the option to tune it to a CAI setting but other than that idk, any ideas on how to fix this?

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Old November 9th, 2010, 10:38 AM   #2
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What code is the CEL for?
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Old November 9th, 2010, 01:44 PM   #3
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im not sure what the fault code is but the tuner is saying its running too lean? im running 93oct could the sotck MAF be pegging out?

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Old November 9th, 2010, 05:39 PM   #4
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but i recently found some new info on this some larger intakes require a recalibration tool can i set my parameters with my diablo tuner? or by running the engine too lean from just the CAI gonna take a toll on my drivetrain?
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Old November 10th, 2010, 10:05 AM   #5
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I'm not familiar with Diablo's tuning devices, so I'm not going to be much help there. If it truly is running lean and not just an errant reading from the MAF, yes, you will risk damage to your engine. Can you post a pic of your CAI? Is there a sharp curve directly before the MAF (typically, a no-no)? Have you checked for any leaks between the MAF and the TB? Have you tried running the "CAI setting" on your tuner?
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