2004 6.0 Fuel Economy Tune or not - Diesel Forum - TheDieselStop.com
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Upgrades and Aftermarket - 6.0L Engine Upgrading or adding OEM or aftermarket equipment to your 2003-Up Super Duty or Excursion with 6.0L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

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Old 02-29-2012, 09:33 PM   #1 (permalink)
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2004 6.0 Fuel Economy Tune or not

I've got a 2004 6.0 Supercrew Lariat Stock 2WD. I'm getting 15-16mpg. I've heard bad stories about custom tunes. What about an economy tune to improve fuel mileage. Will this stress the engine or warp the heads ? With a good economy tune what kind of gas mileage increase could I expect to get ?
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Old 03-02-2012, 08:33 PM   #2 (permalink)
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15-16 doesn't sound too bad in my opinion.

Do a search on tuners. Give one of the custom tuners a call. A reputable tuner is not going to give you a tune that will hurt your truck if you drive reasonable. There are, however, quite a few things you could/should do before going with a tuner. There are a lot of knowledgeable guys here that can give some insight as to what you need to do to keep your 6.0 healthy. Then you might consider some tunes.

Good luck!
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Old 03-03-2012, 12:40 AM   #3 (permalink)
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15-16mpg where, city-highway-mix of both need a little more info, i get 18.4 Hwy doing 62 and 9 pulling my 14k 5er. If you tune you may need to have some deep pockets because the 6.0 is maxed out on hp. You need to get some gauges like Edge Insight CTS or ScanGaugeII first to see the health of the motor get a coolant filter to remove the casting sand a fuel pressure gauge pressure under 45lbs kills injectors. Then if you feel lucky get something like SCT Xcallibrator3 W/ Custom Tunes By Innovative Diesel or Matt at Gearhead and tune it for head bolts that way you will have a boost gauge because max boost is 28lbs mine will only do 25lbs solo but pulling 14,000lbs i can hit 28+ so i back out of it some.
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Old 03-03-2012, 07:56 PM   #4 (permalink)
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dont get a tuner for mpg. you will be dissapointed. get it for power only.
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Old 03-03-2012, 09:54 PM   #5 (permalink)
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Exactly what Lub says. Not even an option. Tune for power not economy. I get my best mileage with innovative's x-street tune vs the economy.
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Old 03-04-2012, 06:49 AM   #6 (permalink)
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Originally Posted by Derkperk View Post
Exactly what Lub says. Not even an option. Tune for power not economy. I get my best mileage with innovative's x-street tune vs the economy.
Agreed 100%.
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Old 03-05-2012, 12:42 PM   #7 (permalink)
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X3 My truck gets the best fuel econo on the max power setting on my tuner. BTW, I have stock head bolts.
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