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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, 11:30 AM
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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, 11:37 AM
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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, 11:43 AM
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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, 11:56 AM
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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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#5
Fri, February 20th, 2009, 11:56 AM
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TA2D, if he's getting 19.8mpg right now, that's amazing. Most customers come to us getting about 14mpg, and they usually see an increase of 1-3 mpg depending on driving style. Last summer when we were testing tunes for the 5.4L on our Expy, we got up to 21.4 on a trip from Atlanta to Orlando, but we've generally hovered between 19 and 20 (before this crappy winter blend fuel!). I doubt your buddy would see a gain in mpg.
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~ Corey  Resting in Peace -  1969 - 2019
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#6
Fri, February 20th, 2009, 12:48 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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#7
Fri, February 20th, 2009, 01:53 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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#8
Fri, February 20th, 2009, 02:20 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 1996! (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!
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#9
Tue, March 10th, 2009, 02:16 PM
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my truck was getting between 12 and 15 with the stock tune...I ran one tank through on level one with the gryphon and I was beating on my truck, got 17.3...if I baby it it will see 18-19
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 2004 STX 4x4, 2.5''AS, AAL, 18x9 Eagle 178, 325 60R18 Nitto TG, Magnaflow SIDO Catback, 20% tint, XLT Power windows, locks, and mirrors, XLT cluster, FX4 steering wheel, PIE, Bushwacker's, XLT overhead console, Gryphon
Last edited by bjp207; Tue, March 10th, 2009 at 07:12 PM.
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Flowmaster 40, PHP Gryphon, AS 2" kit
Linear Mode
