MustangWorks.com : Ford Forums - View Single Post - Underhood Conical K&N vs. Stock Airbox with K&N

PKRWUD · 08-30-2001, 04:54 PM

Jim-
This is very interesting info! I know my 4.9L runs better with the FIPK. I tried reversing the top of the factory airbox to allow for a more direct flow, which was an improvement over stock, but lacked the extra power under load the FIPK provided. A friend with a 4.6L noticed similar gains, as did his wife's Civic. All three first tried K&N replacement filters first (which are now for sale

) ). I haven't done any testing on 5.0 Mustangs though. Good info. Thanks.

Take care
~Chris

------------------
Retired Moderator
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My site: JimPorterRacing

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08-30-2001, 04:54 PM	#7
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Jim- This is very interesting info! I know my 4.9L runs better with the FIPK. I tried reversing the top of the factory airbox to allow for a more direct flow, which was an improvement over stock, but lacked the extra power under load the FIPK provided. A friend with a 4.6L noticed similar gains, as did his wife's Civic. All three first tried K&N replacement filters first (which are now for sale ) ). I haven't done any testing on 5.0 Mustangs though. Good info. Thanks. Take care ~Chris ------------------ Retired Moderator MustangNet My site: JimPorterRacing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!