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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 Fri, May 14th, 2010, 03:20 AM
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ticopowell ticopowell is offline
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makes sense... now my question is why am i getting 13mpg's on the highway... my gryphon is set to 87 towing (canned... cant afford custom ones yet, plus im gonna do some more upgrades) and I previously had it on 91 perf, and both have shown about 13 mpg's... I measured the miles with the odometer and divided by gallons used when i filled a full tank each time, and the gryphon showed an average of 15ish. granted I havent had them on for very long, but the time they have been there they havent done anything for mileage ... any ideas? I did just put on a cat back gibson exhaust and that helps with weight and sound... but idk if it will do much for mileage...
any ideas? I am thinking of doing E-fans, and UDP's but those will wait for a bit, had to replace tires this week so im kinda strapped
thanks for the help.
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