Realistic Mileage Bump with Tuner & DPF delete? - Ford Powerstroke Diesel Forum
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Old 02-07-2011, 10:14 AM
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Realistic Mileage Bump with Tuner & DPF delete?

What's a realistic mileage bump to expect if I were to get a tuner & DPF delete?

I have 57,750 miles and about to exit the powertrain warranty. Thinking about trading for a '11 after hearing about the better fuel economy from a friend's dad who just bought one. I currently get about 12.5 mpg with a roughly 50/50 mix of city/highway driving and 35" MT's.

Just want to compare what I could get tuned vs. a '11 truck.

I hear some people claiming 16 mpg with 37's and lifts, others saying tuner only added 1 - 2 mpg.
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Old 02-07-2011, 11:53 AM
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Since DPF delete kit are for off-road racing applications only, we can not and will not discuss mileage gains etc. I will say that that deleting the DPF/Cat will improve the overall efficiency of the engine considerably though. The engine is able to breathe MUCH better without them.
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Old 02-07-2011, 11:57 AM
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Yeah... not really a helpful reply.

I guess I'll wait for one of the thousands of people who use them for "off-road racing applications only" but spend 90%+ of their time on-road driving and the remaining % of the time off-road, but not racing.
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Old 02-07-2011, 12:20 PM
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When I had my truck set up like yours with 35s I was able to get 16. Now with the 37s I have that say on the side they're 13.50s but are lucky if they're 12.00 wide I can get 15-15.5 driving like a grandma most of the time and about 80% hwy.

I think thats a realistic estimate but keep in mind mines a Supercab so its a touch lighter. The unrealistic ones are the guys that claim 24 because they got it on a long roadtrip downhill with a tailwind.
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Old 02-07-2011, 12:28 PM
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Quote:
Originally Posted by ShirtaDay.com View Post
Yeah... not really a helpful reply.

I guess I'll wait for one of the thousands of people who use them for "off-road racing applications only" but spend 90%+ of their time on-road driving and the remaining % of the time off-road, but not racing.
Sorry man, my hands are tied.

Others will chime in with info for you though.
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Old 02-07-2011, 02:20 PM
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Quote:
Originally Posted by ShirtaDay.com View Post
Yeah... not really a helpful reply.

I guess I'll wait for one of the thousands of people who use them for "off-road racing applications only" but spend 90%+ of their time on-road driving and the remaining % of the time off-road, but not racing.
how bout you just use the search button and read up on it. there are tons of threads about mileage.
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Old 02-07-2011, 03:01 PM
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Conservatively, with 35's I'd say 15-16 with an easy foot and 16-18 with stock size tires. I have tried both and these are the numbers I'm seeing. I know some "claim" 20-22 but I question how they are calculating their numbers.
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Old 02-07-2011, 03:24 PM
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0-4mpg increase
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Old 02-08-2011, 03:02 AM
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All trucks are different or the way some calculate for their great milage claims. Mine stock 9.5 in town/ 14 Hwy. After delete 12/19.5 this was on stock 20's and tires. After I put 35s on I dropped to 11.5/16.5
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Old 02-08-2011, 11:01 PM
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My buddy and I put an H&S tuner, 5" Flo Pro exhaust (straight), and AFE intake on his 2008 about a month or two ago. He was getting 12-13 mpg with a 3.5" lift and 325/60/20 BFG ATs. He is now getting 18-20 hand calc'd.
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