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On my 2004 cayenne turbo, I have an EVOM intake along with other mods and an EVOM tune. I have been having issues with smooth delivery of acceleration and it has been suggested that it could be the EVOM intake causing turbulent flow and giving the MAF false readings. Any thoughts by those who have an aftermarket intake? Anything that can be done beyond replacing the stock intakes. I have checked all the other potential issues (ignition and fuel system, pressure test)

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My thoughts are this is unlikely....but try unplugging the mafs and running it that way....With no mafs the csr will revert to a full rich map....If the problem is still there then you can rule out the mafs.

My main reason why I don't think it's the air intakes is because the pipe routing is not overly different.....If the route was shorted significantly then that would be cause for concern

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  • 7 years later...

After a long time of trying to sort out my drive ability issues with my evom tune, I decided to clean both MAF with CRC mass air flow cleaner and the car ran great for a day or two then started to get sluggish again under hard acceleration. Is it possible that my MAF could be going bad but not bad enough to set off a CEL. Of note, I did not take the MAF out when I cleaned then and just sprayed the sensors while in place which I know is not the recommended way to do it.

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You need to pull some data and measurements to see what’s happening with fuel delivery as well. I have cold air intakes along with a few other bolt ons and a custom tune. I too experienced sluggish response at WOT or heavy loads. After a few tests it turned out my fuel pumps were failing over time. Swapped them out and problem solved.

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I am going to remove the MAF sensor to check them but would appreciate any recommendation on how to pull the MAF housing off from the plastic connecting tube that goes to the turbos without breaking the accordion section when trying to pull up on it as last time I tried to remove them, it was very difficult to separate it. Is there something I can spray around the connection to loosen it up and ease it removal.

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