K&N Air Filter Info

Okay so I noticed that the K&N panel filter (for the raptor) had better air flow rates than the conical filter used in their raptor specific CAI (Note: the raptor conical air filter uses an XD filter. K&N does make a non-XD version of the same conical filter with better flow than the XD however; the non-XD isn't offered in the Raptor CAI due to the off-road nature of the truck). Anyway...

Whats up with that? I asked K&N. Below is the email string:


From:
Sent: Thursday, May 30, 2013 8:05 AM
To: Epic Tech Support
Subject: Air Flow Question

Is it true that the K&N panel filter for a 2011 ford raptor p/n# 33-2385 has better air flow (CFM) than the conical filter (p/n# RF-1044XD) used in the air intake p/n# 77-2579KTK for that same vehicle?

Thanks,
Devin

From:
Sent: Thursday, May 30, 2013 11:37 AM
To:
Subject: RE: Air Flow Question

Hello Devin,

Thank you for your interest in K&N products. There appears to be a difference in flow when comparing the air filter test data and this could be due to the fact that we use an extreme duty media in the RF-1044XD. This is a tighter weave that offers extra protection in off road conditions, but sacrifices air flow to some degree. Hope this helps.

If you have any further questions please reply to this email or contact customer service at (800)-858-3333. Thank you for writing,

XXXX XXXXXX
Product Specialist
K&N Engineering
[email protected]
Phone: (***) ***-XXXX
*When replying please include this entire e-mail*


From:
Sent: Thursday, May 30, 2013 10:25 AM
To:
Subject: RE: Air Flow Question

That’s interesting. You would think that the RF-1044XD would then have better efficiency than the panel filter but that is not the case. Do you have test data for the RF-1044 (non XD version)?

Would you still recommend using the wrap on the XD filter in sand or is it not needed with the tighter weave?

Regards,
Devin


Hello,

Currently we do not have any test data on RF-1044.

If you are in off-road conditions, the air filter wraps help prolong the service life of the air filter. The less you have to service the K&N air filter, the longer it will hold up.

Thanks again,

XXXX XXXXX
Product Specialist
K&N Engineering
[email protected]
Phone: (800) 858-3333
*When replying please include this entire e-mail*

I run the sock 24/7.

Stepside said:

Now this begs the question:

What is the difference in - cfm air flow, between stock panel filter to K&N panel filter?

Click to expand...

++1