K&n drop in filter worth it?

[Ebm]

I know those Ford engineers personally and they're engineered to a set of targets, not to the best they can be. Yes, there is room left on the table for performance. The stock airbox is perfectly adequate for stock tune and exhaust, and meets the fuel economy, NVH and emissions targets that the S550 program laid out to the air induction system team.

There are gains to be had, but at the expense of NVH (subjective), emissions (most of us don't care much) and, depending on the design, stable IATs. A panel filter in the stock box isn't going to do much by itself. Even if it's 1 HP across the entire curve, you're not going to feel that. The biggest benefit is maintenance costs...just wash it. A panel filter combined with a better flowing inlet tube can net some gains, particularly in transients, which a dyno cannot show.

Don't believe me? Why would Ford put the CAI they did on the GT350 if it didn't flow better?

To take more money from our pockets. Anything they can add to the car that drives up the price even more then it is...

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[AZ_Ryan]

Dry or Oil? That's the part I don't get. Which one is alllegedly better performing?

You're not going to notice a difference in "performance" with either. K&N's are garbage. All they have going for them is name recognition and hype. Hold a K&N and an AEM side by side and look at the quality. Go with the one that filters better and won't contaminate your MAS.

 

[DRKHORS]

I've got a drop in K&N and throttle response is better. Not quite the difference from Normal driving mode to Sport, but improved nonetheless.

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