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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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#4
Wed, March 18th, 2009, 03:31 PM
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The factory throttle body is ~2mm smaller than the hole in the intake manifold. Unless you port the manifold as well, the throttle body is a big, fat waste of money. 4 years ago we took a factory throttle body and bored it out, cut a new throttle plate, and popped it on out 2006. It didn't make ANY difference on the dyno. Zero. In fact all we DID get from it was a P2106 Throttle Body DTC about every 4th time we started the truck. Major disappointment.
If you haven't already purchased it, I would save my money.
__________________
Bill Cohron - The Mad Doctor   Power Hungry Performance - The ORIGINAL in Ford performance tuning... Since 1997! (678) 890-1110 www.gopowerhungry.com - Home of the Hydra Chip, Minotaur Tuning Software, and the new Orion Reflash System for Navistar! Bring back  Windows™ XP and 7.  Windows™ Vista and Windows™ 8 is a pain in my a$$!  Windows™ 10 is only slightly less annoying!  Windows™ 11 is garbage!  Much to my surprise, I'm actually quite enjoying Linux! 
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