s&b intake help - Chevy and GMC Duramax Diesel Forum
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post #1 of 12 (permalink) Old 01-25-2013, 08:40 PM Thread Starter
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s&b intake help

I know this has been covered but im on my lunchbreak at work installing my s&b intake. I have a 2013 duramax I swapped the maf sensor over. But what do I do with tje other sensor on my stock airbox? Just leave it unplugged?
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post #2 of 12 (permalink) Old 01-25-2013, 08:53 PM
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Contact the Dealer you got it from and have them send you the right kit. Dry filter kit Item #: 75-5065D Cotton Filter Item #: 75-5065 In the interim put your stock intake back on you'll throw a code.

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Last edited by FC5452; 01-25-2013 at 08:56 PM.
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post #3 of 12 (permalink) Old 01-25-2013, 08:54 PM Thread Starter
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I remember reading at some point someone had the same issue and they were told just to leave ot alone I think
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post #4 of 12 (permalink) Old 01-25-2013, 09:05 PM
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Now that you brought it up, I remember reading that, Though I believe he had to swap the kit out. Here ya go Just installed s&b intake. Check engine light?

S468 with some fuel and a Tuna or two
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Last edited by FC5452; 01-25-2013 at 09:12 PM. Reason: Found the Thread
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post #5 of 12 (permalink) Old 01-25-2013, 10:05 PM Thread Starter
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any idea what that sensor is?
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post #6 of 12 (permalink) Old 01-25-2013, 10:25 PM Thread Starter
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and will it be safe to drive it for a few days till i get it exchanged
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post #7 of 12 (permalink) Old 01-26-2013, 03:54 AM
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If you do drive it fuel mileage goes down and check engine light comes on. Not sure what the sensor actually reads


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2013 2500 lml leveled w/ s&b intake, 5'' turbo back flo pro, h&s minimax, egr delete, drp downpipe.
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post #8 of 12 (permalink) Old 01-26-2013, 07:32 AM
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A mass air flow sensor is used to find out the mass flow-rate of air entering a fuel-injected internal combustion engine. The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure. Only thing I can think of why GM is Using two is that the mapping changed. seen this done in injected Gas engines. maybe Kory, Rob have a better explanation in the tuning aspect of it.

S468 with some fuel and a Tuna or two
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Last edited by FC5452; 01-26-2013 at 07:41 AM.
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post #9 of 12 (permalink) Old 01-26-2013, 07:58 AM Thread Starter
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I put it back to stock. Check engine lights still on. Do I need to disconnect my batteries
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post #10 of 12 (permalink) Old 01-26-2013, 09:09 AM
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What is the part number of your intake? there is a difference between the 2012 and 2013 intakes.

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