I've heared a lot of those performance filters, yet I've also read a blog of a guy who put some aftermarket performance filter, which made the throttle body extremely dirty. So, he had thrown the filter away, as well as the OE throttle body, and had to pay to the mechanic for the job... Just someone else's story, yet I do not want to risk.
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K&N Performance Air Filter
Posted 20 November 2017 - 09:27 AM
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Posted 20 November 2017 - 10:53 AM
With 173k mi. I have never cleaned my throttle body with K&N air filter for most of the miles. Also I haven't cleaned the filter either and my oil analysis numbers are great.
Posted 19 June 2018 - 02:40 PM
I finally replace my K&N air filter and as you can see with about 155k miles the inside is still clean and you can see daylight through it. the back side is dirty toward the edges. Looks like I could go another 100K miles. I had a new FORD filter that I replaced it with that I had bought 4 yrs. ago.
- Redshift likes this
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