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Cold air intake recall for ecm reprogram

Toolman4
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RCF71 Enthusiast

RCF71

Posted
Posted (edited)

If like the GM Performance CAI on my Camaro, it only recalibrates the MAF sensor to correct the airflow reading and thus the air/fuel mixture.  So yes, it would correcting a rich or lean condition - could be either I think as even though the main purpose of installing the CAI is to increase airflow, the airflow pattern and location of the MAF sensor affect it’s readings.

Edited by RCF71
fatwhiteboy Enthusiast

fatwhiteboy

Posted
Posted
9 hours ago, Toolman4 said:

Does anyone know how this reprogram affects performance.  Is it running rich since it says it might exceed emissions standards?  

The dealer told me that it does not change the tune but it reprograms the MAF for more air.  I am not sold that it is the best system on the market, mine was part of the deal.  If I was doing it again, I would look at better flowing systems like AFE. Do you have the bulletin number, I have not seen a recall on them yet.

Anacortes Army Guy Enthusiast

Anacortes Army Guy

Posted
Posted
10 hours ago, Toolman4 said:

Does anyone know how this reprogram affects performance.  Is it running rich since it says it might exceed emissions standards?  

As I understand this recall, it only affects those who ordered the performance intake that was installed by the dealer, who then failed to perform the ECM update that is an integral part of the intake installation.  Those, probably the vast majority of people like myself, who had the ECM update performed as part of the intake installation, are not affected by this update.  There's at least one other thread on this site that has addressed this recall recently.  It appears that some people are interpreting this recall as involving all performance intakes, which is not the case, but just those where the dealer failed to follow the installation instructions and install the update when they put it on the vehicle.

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Toolman4 Enthusiast

Toolman4

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I dumped the paper for the recall #, but mine was a 19 at4 and this was the first I heard of it.  It seems to me it would be running lean without the adjustment, but they make it sound like it's a epa rich condition. I get 19, 20 running down the road with the 6.2 and factory lift so I don't want to affect the mileage or power.  

RCF71 Enthusiast

RCF71

Posted
Posted

Lean conditions can also cause excess emissions, just different emission components.

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