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Normally high silicon values are due to engine oil formulas or during the process of making the engine
Air filters has nothing to do with silicon in the engine

Logically its kind unlikely unless you have a large ring gap
OEM air filter is fine unless you want to spent money for CAI either for sound or more than 250HP
 

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I'm 30k miles so its very likely dirt showing up as silicon . Engine well run in to get rid of silicone from manufacture.

However, seeing as the oem setup is a CAI anyway, all im after is the best drop in filter.

Thinking I'll stick with foam and see how it goes

The theory is that due to large fuel dilution in these engines a decent amount of the combustion contents ends up in the oil.
I recommend follow up with the oil analysis
I don't see any fuel dilution issue even with constant track driving. My oil analysis have very little to none fuel
 
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