Mileage?
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They are programmers for your vehicle. Through your vehicle's computer they change the parameters in which the engine will perform versus the factory settings.
Here is a link.
http://www.edgeproducts.com/product.php?pk=54&pvk=161
I have never used one myself as there was no need. You also need to be careful as it might give a dealer an excuse to say your warranty is void. It has been discussed on this forum but since I have no plans to use one I did not pay much attention to the posts.
Here is a link.
http://www.edgeproducts.com/product.php?pk=54&pvk=161
I have never used one myself as there was no need. You also need to be careful as it might give a dealer an excuse to say your warranty is void. It has been discussed on this forum but since I have no plans to use one I did not pay much attention to the posts.
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I have the 3:55 LS. During the first 2500-3000 miles my average was somewhere around 11.5 mpg, needless to say I was a little disappointed. However, now my average has jumped up to around 16 mpg . I usually drive with a heavy foot so I'm sure I could get better results if I eased up a bit.
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I have the 3:55 LS. During the first 2500-3000 miles my average was somewhere around 11.5 mpg, needless to say I was a little disappointed. However, now my average has jumped up to around 16 mpg . I usually drive with a heavy foot so I'm sure I could get better results if I eased up a bit.
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Sounds like many of you are getting some pretty decent mileage out of these new 09's.
I know with my previous truck (05 w/5.4 and 3.73 LS) I never saw 18 mpg highway ever and city/highway combined usually was in the 14-15 mpg range.
I imagine the 4.6 may be even be slightly better, but I still like this new 5.4.
I know with my previous truck (05 w/5.4 and 3.73 LS) I never saw 18 mpg highway ever and city/highway combined usually was in the 14-15 mpg range.
I imagine the 4.6 may be even be slightly better, but I still like this new 5.4.