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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 8th, 2009, 03:13 PM
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Cool, Lars - Looks like you won't have to fiddle with the idle RPM for battery charging (or were those voltage readings at "cruise" RPM)? If so, then at idle with lights and accessories on, you could be at a pretty low charging voltage.

I'll be interested to know if you can "feel" any power increase and if you see any gas mileage increase. Let us know!

- Jack
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Old Fri, May 8th, 2009, 04:59 PM
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Ok I will add this with everything normal and at idle now and I turn the parks on or apply brake it drops to 13.7 then come back up in 2 or 3 seconds to 14.2. Turn the headlights on and it goes down to 13.5-13.6 and recovers to 14.1.

Its about 55 today and the cht was at about 201-204 cruising at about 70 mph. Came home and it stayed at 200 sitting for 15 min in the driveway.

And of course you do a mod and either its percipitating or you're sick. Its just down pouring right now. Even w/o customs and running at stock, it felt like it had a little more pep.

Lars
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Old Fri, May 8th, 2009, 05:12 PM
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Those numbers all sound fine to me, and I'm sure you think so too. Too bad you don't live down here. It's 96 degrees out, the sun's shining, slight breeze out of the west.... This is pretty much what you get, mods or not!

- Jack
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