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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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#1
Fri, February 20th, 2009, 01:30 PM
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07 f150 4.6 mpg with gryphon
A guy in my squadron is considering purchasing a Gryphon and wants to know what kind of increase in mpg to expect with it. His truck is bone stock. Whats the average increase? Right now hes getting 19.8 highway. Thaaaanks
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#2
Fri, February 20th, 2009, 01:37 PM
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the better question would be, is he gone to be able to keep his foot out of the throttle after the new found power
 I havent been able too , so I am not to sure about the mileage question
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#3
Fri, February 20th, 2009, 01:43 PM
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I'm pretty sure he will be able to. He said he doesnt care about extra power just fuel economy. At least hes saying that now. We'll have to wait and see
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#4
Fri, February 20th, 2009, 02:48 PM
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ok That 19.8 was pure highway on a trip. Not sure what his norm mpg is. He wants to see how big of a difference it makes in my truck before he decides. Thanks
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#5
Fri, February 20th, 2009, 03:53 PM
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I thought you were saying he was only getting 4.6 mpg :omg:
then I realized the engine is 4.6L. Nevermind, Carryon.
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#6
Fri, February 20th, 2009, 04:20 PM
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A lot of it depends on what what gears you're running. 3.31 or 3.55 geared trucks fare better in the mileage arena and can often see better than 20 MPG with tuning. However, if all he's looking for is fuel economy and he's already at 19.5 MPG now, I doubt there would be a significant enough gain to offset the cost of getting a programmer.
There may be more gains if he does a lot of city driving or mixed driving. If he's got an average number for his day to day, we'll be able to better advise a solution. Take care.
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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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#7
Fri, February 20th, 2009, 01:56 PM
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Quote:
YMMV, as they say....
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-- 2007 F150 XL, 4.6, Regular Cab, Gryphon Installed 2/2009 "voiding warranties since 1979" 
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Flowmaster 40, PHP Gryphon, AS 2" kit
Hybrid Mode
