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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.


 
 
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Old Thu, January 22nd, 2009, 08:41 PM
lumpyf150 lumpyf150 is offline
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Default Follow-up question for Bill

Quote:
Originally Posted by Power Hungry View Post
My personal opinion... there's little advantage to running a CAI unless you are a rather aggressive driver. The average person would infrequently be in the RPM range where a CAI would actually make a difference. We've seen dyno numbers both with and without a CAI and they are often identical until you hit about 3500 RPM and then they separate to a final difference of about 8 HP.

You're probably better off just getting a good tune and if you really want to improve airflow, remove the snorkel from the fender to the flex coupling on the intake. That'll give you the same benefit without worrying about lean conditions or water-fouling your filter.

Take care.
Bill, I hope this isn't a dumb question but does the same (stock provides enough airflow) hold true for cat-back exhausts? Thanks.
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