Fuel mileage after EGR delete ? - Ford Powerstroke Diesel Forum
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post #1 of 34 Old 03-27-2011, 12:24 AM Thread Starter
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Fuel mileage after EGR delete ?

Hi Im a newbie but i have a question im hoping to get answered.I recently done an egr cooler delete on my 04 350 SRW 4x4 it always got a consistent 17.5 mpg but since i deleted the cooler it has dropped to 10-12 mpg. i was told it would in crease the mileage not kill it. at these fuel prices it took the fun out of driving my truck .This is my 1st diesel and really like it when i hook on to my horse trailer there is no comparison to a gas.Is this normal or is there something else i need to do to help get my mileage back any help or suggestions would greatly be appreciated
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post #2 of 34 Old 03-27-2011, 05:40 AM
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after i got mine done it didn't increase any at all and if any dropped bout mile per gallon.
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post #3 of 34 Old 03-27-2011, 05:51 AM
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Mine didn't change at all, don't know what you've got going on. 12 mpg sucks though.

2004 F-250, ZF-6, 03 turbo 4" mbrp exh. PHP reprogrammed FICM, sct X3, egr delete, auto meter ultra lite boost & pyro, arp head studs, firestone destination m/t's. ccv mod, mag hytec diff covers, 35% tint, dieselsite coolant filter, cat elc, B&W gooseneck hitch.
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post #4 of 34 Old 03-27-2011, 06:14 AM
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im in the same boat.

before i was getting about 15-17 mix driving now im down to 13-14 but its been down in the 10 . i think its mostly just the idling time due to cold weather.
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post #5 of 34 Old 03-27-2011, 04:16 PM
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That is brutal, I am planning doing a delete once my warrenty is up. But this news sucks.


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post #6 of 34 Old 03-27-2011, 04:37 PM
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14.87 CONSISTANTLY with a 6" lift on 38" tires, fully deleted and no tunes.
Hand calculated.

Truck is now tuned (Innovative street), 4" turbo back exhaust, studded, 20" wheels and soon to be installed Powermax, Updated FPR spring, banjos and a Looney wild tune.

Since all that work I've only got 2,400 miles on it and don't have any figures because 2k of that was hurry home across the country with completely failed headgaskets puking everywhere and some experimental/break in miles after studs and new tuning before I had to park her for the year since my work season is now in full force. But.....Before my gaskets totally tanked in Nebraska, I was getting over 412 miles on a tank in a short box truck.

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post #7 of 34 Old 03-27-2011, 04:38 PM
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ya same here did mine in december so im waiting till it warms up to see if I get back to normal or better.
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post #8 of 34 Old 03-27-2011, 10:16 PM Thread Starter
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well i was hoping to at least stay the same but i checked it yesterday and 12.1 is what it calculated out the tank of fuel before was 10.8 and im babying this thing...before it didnt seem to matter how i drove and still stayed in the 17 range.....very aggrevating
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post #9 of 34 Old 03-28-2011, 02:00 PM
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So, if there is loss of MPG, why do a delete at all? Why not replace with the Bulletproof Diesel EGR cooler. They are said to be a lifetime fix.

So, please forgive my ignorance, I really am a newbie at this stuff and I would really like to know the answer.

Thanks,

Andrew
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post #10 of 34 Old 03-28-2011, 03:26 PM
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I just did my delete a few wks ago. So far it looks like my mileage had improved, at least a little. I won't have a definitive figure until I go through the whole tank, by it looks to be slightly better than before the delete. I know my EGT's have dropped, probably 50-75 deg. or more. A 5 mpg drop seems pretty drastic, maybe something else is going on, or something was missed during the replacement of everything after the delete.

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