Negative Positive
Title: Fouls up MAF in 5vz-fe
Review: Threw it in, gave me a check engine light for P0171 within 600 miles. Took the filter out cleaned the maf and put OEM filter back in, 15000 miles with no problem. I then re-cleaned the maf and Threw the K&N fitler back in and within 50 miles, the same Check Engine code came back. The one I received came WAY WAY WAY over oiled. My maf is gummed up again. Be careful with all the hype.
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