Air cleaner restriction of 20hp. What are you running?

guys72Mach1

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I recently dyno'd the Mach and found that my 13" K&N Air Filter with the cast Ford Racing Air cleaner base and lid, resulted in a 20hp loss. Ran it with the air cleaner and without and it picked up 20hp without the filter.

I have been searching for a 13" air filter ever since and the closest thing that would fit is a skinny little 12" K&N Filter from Summit.

I was shocked to find out that there was such a huge hp loss with the filter on, especially being a K&N, but apparently the air cleaner top so close to the air horn is causing a big restriction. I put a 2" spacer on it, which helped a little, but I can still tell the power difference at WOT with and without the filter on. So my search goes on.

Currently not running the ram air, but considering going that route.

Whatchu got????

 

turtle5353

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I am running an open element filter lid. Its K&N style fabric. But the lid essentially becomes a filter also letting more air in.







 
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Don C

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If you have the space under the hood, just get a taller filter element, same diameter, and a longer stud for the lid.

 

guys72Mach1

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If you have the space under the hood, just get a taller filter element, same diameter, and a longer stud for the lid.
Performer Air Gap manifold makes sure to take up any unused space....thx Edelbrock

 
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