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Old 04-20-2018, 12:18 PM
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jrm jrm is offline
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Join Date: May 2010
Location: Nor Cal
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jrm will become famous soon enough
jrm jrm is offline
Senior Member
jrm's Avatar
 
Join Date: May 2010
Location: Nor Cal
Posts: 1,630
jrm will become famous soon enough
i remember that 3rd gen mod

Quote:
Originally Posted by 81runner View Post
HCF was deleted a year ago when I picked up the truck. And a k&n drop in replaced the paper filter. The issue here, is the restriction from the factory air intake tube and surface area of the drop in versus the cone shaped filter and smooth tubing in this kit. In my experience, the drop in filter never performs the same as a full intake kit. Proved it on a 99 Ranger and my 2004 corolla. Massive difference in throttle response, improved fuel economy.
replacing the intake with a smooth surfaced piece of muffler pipe. Theree a thread around about that mod being done on a 4th gen but without any real conclusive data.

And youre right it did improve throttle response noticeably.
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