Experience with K&N after GMTU?
#1
I've seen one or two mentions that some think the disabled learn down feature on the GMTU allows a K&N filter lightly oiled to be use without throwing a CEL but I haven't read 1st hand reports and I though the GMTU kept the learn down on the HHR. I know my previous cars would learn the airflow just fine and never had a CEL. I didn't know they threw regular CEL's until I got an HHR.
Any GMTU guys have success with the K&N?
Any GMTU guys have success with the K&N?
#4
I have the GMTU and a drop in K&N filter and never have had a code pop up. I have also read the reports of people having problems. I would assume that they get a code because they oil the filter to much and it gets on the MAF sensor.
#8
Well this is the only vehicle I have ever had that I did not have a K&N so I just bit the bullet and ordered one. I'm going to clean it as soon as I get it since I do know they are over oiled sometimes from the factory and I'll just lightly oil it.
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