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post #1 of 4 Old 12-08-2008, 05:59 AM Thread Starter
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dismal mileage

I'm only getting 13 or so in town, and no more than 15 on the road. Speedometer has been recalibrated for 33" tires and tested correct, so that can't be it. Only thing I don't know is what the rear end is - anyone have codes for gear ratios? Specs/mods listed in my sig, but have recently added MBRP 4" turbo back, no cat, muffler in place. Any thoughts?

2005 SC Lariat FX4
AFE intake
Superchips Flashpaq
4" turbo-back MBRP cat delete
Ranch Hand front replacement
315 BFG A/T's on stock rims
Rhino liner
Spit cup in console cupholder (driver's side)
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post #2 of 4 Old 12-08-2008, 06:50 AM
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psd

You need some custom tuning,and a egr delete kit,and your mileage should go way up.
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post #3 of 4 Old 12-08-2008, 06:56 AM
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Quote:
Originally Posted by mastiffsrock View Post
I'm only getting 13 or so in town, and no more than 15 on the road. Speedometer has been recalibrated for 33" tires and tested correct, so that can't be it. Only thing I don't know is what the rear end is - anyone have codes for gear ratios? Specs/mods listed in my sig, but have recently added MBRP 4" turbo back, no cat, muffler in place. Any thoughts?
The tires will take you down one notch. The Ranch Hand bumper on the front will take you down another. The number one way to get fuel mileage is to drive with an egg under you right foot and keep the RPMs down. There is a tag on the rear diff cover that will give you the ratio. Or you can get the code off the door jam and search it. JJ

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post #4 of 4 Old 12-08-2008, 06:56 AM Thread Starter
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Quote:
Originally Posted by flyin hawaiian View Post
You need some custom tuning,and a egr delete kit,and your mileage should go way up.
I saw your other thread asking if the EGR delete actually works on the 6.0... not sure why you would recommend the mod if you're not sure it works?? I had an identical '05 a couple years ago - it had fewer mods but got 17/20 mpg.

2005 SC Lariat FX4
AFE intake
Superchips Flashpaq
4" turbo-back MBRP cat delete
Ranch Hand front replacement
315 BFG A/T's on stock rims
Rhino liner
Spit cup in console cupholder (driver's side)
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