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Old 09-15-2013, 06:56 AM   #9
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Join Date: Sep 2012
Location: Philadelphia, PA
Posts: 33
An update... no way to get a stock air filter at the weekend around here, so I cleaned the MAF and put the K&N back. She ran great for a while (better than ever) and then got bad again.

So either it is the K&N or it is the MAF which is bad. A stock filter costs $20 and a MAF costs $240, wonder which one I am going to try first :-)

I really didn't want to believe this stuff about oil coming out the K&N and into the MAF, and K&N heavily refute this and have done a lot of tests which claim that the oil residue is BS. But, my testing is clearly pointing to the K&N filter not working in some way.

K&N Mass Air Flow Sensor Test Results

Thanks as always. Update tomorrow when I have secured a stock filter, re-cleaned the MAF and test driven her.

John
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