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Old 03-28-2014, 03:49 PM   #15
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Bodiemax,
I have an '09 450--at around 97000 miles, I had the DPF taken off and an H&S MiniMax tuner installed. At around 135000, I had the rest of the exhaust removed and replaced with a 4" system from the downpipe back, with an MBRP muffler in the system. Now at 168000, I have NOT seen the spectacular increases in MPG that some claim, but don't have to worry about the regen kicking in while climbing Monarch Pass, or the oil level climbing above full, or that darned "drive until exhaust is clean" message as I get home. The oil now stays mostly clear thru the 5k change intervals. If you wanted to try one, a GearVendor overdrive MIGHT help, but you would never recover the cost. These trucks are heavy and boxy, just have to live with it. Keep the rpms below 1900 solo will help some, and watch the boost gauge to keep it from jumping to 30+.
Joe
What kind of MPG at what speeds are you seeing?
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Old 03-28-2014, 04:32 PM   #16
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James,
If I can stand to set the cruise on 65 (about 18-1900rpm) then I can squeeze 14 out of it. At 70, it is a steady 13.3, at 75 12.8 or thereabouts. Any faster and I can easily get it down to 11. The tuner is always more optimistic, but these are hand-calculated. I would have to estimate about 0.5-1.0mpg better since installing the tuner. But the power, well...priceless.
When towing, if I stay below 65, will usually see 9.0--but I gross at 27400# so maybe not so bad. Can also see 5-7mpg in a strong headwind.
Joe
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Old 03-28-2014, 04:41 PM   #17
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I guess someone should point out the fact that all the pollution-equipment deletes can:

---cause you to fail inspections in some states
---prevent some trade-ins
---is breaking the law and subjects you to penalties

The manufacturers of this type of equipment are under investigation and are subject to penalties for producing things that are unlawful and which bypass attempts to improve the environment.

Just said to keep things fair and balanced.
Very true. That's why they are "off road" tuners only now.
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Old 03-28-2014, 05:00 PM   #18
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Originally Posted by Airstreamer6 View Post
I guess someone should point out the fact that all the pollution-equipment deletes can:

---cause you to fail inspections in some states
---prevent some trade-ins
---is breaking the law and subjects you to penalties

The manufacturers of this type of equipment are under investigation and are subject to penalties for producing things that are unlawful and which bypass attempts to improve the environment.

Just said to keep things fair and balanced.
I also understand they often change the computer display of MPG to make you think you are getting better mileage than you actually are.
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Old 03-28-2014, 05:24 PM   #19
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As a matter of fact you throw good money after bad. I have given up, it's not worth the trouble.
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Old 03-28-2014, 06:26 PM   #20
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James,
If I can stand to set the cruise on 65 (about 18-1900rpm) then I can squeeze 14 out of it. At 70, it is a steady 13.3, at 75 12.8 or thereabouts. Any faster and I can easily get it down to 11. The tuner is always more optimistic, but these are hand-calculated. I would have to estimate about 0.5-1.0mpg better since installing the tuner. But the power, well...priceless.
When towing, if I stay below 65, will usually see 9.0--but I gross at 27400# so maybe not so bad. Can also see 5-7mpg in a strong headwind.
Joe
Wow, I would have expected better. im sure gearing has a little to do with it but still expected better.
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Old 03-28-2014, 06:28 PM   #21
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"I also understand they often change the computer display of MPG to make you think you are getting better mileage than you actually are"

I have yet to see a factory computer that shows less MPG than you are actually getting--most of them are optimistic also.

Joe
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Old 03-28-2014, 10:19 PM   #22
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Everyone that has DPF without DEF complains about mileage. The technology wasn't up to the EPA standards at the time of the mandates. You either have to remove all the EPA crap ( which is illegal if checked) or get a pre '07 or post '10 truck. My '03 gets better mileage than any of the newer trucks due to the fact that there are no emissions crap on the motor. The '11 trucks and newer do have a lot more power but then you have an extra fluid to watch and buy with the DEF. So basically it is your choice as to what you want to do.
My duramax with 4" exhaust and K&N intake and a 65 HP tow tune gets 10 to 11.5 mpg at 62 to 65 MPH towing a 16,000# + 5er that is just shy of 13' high. I have 373 gears and a 5 sp auto. I am grossing right at 25,000#. Now saying this, as with wingnut60 mileage does go down when running against a significant headwind.
Frank
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Old 03-29-2014, 09:25 AM   #23
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I also have a 08 F450, I did a lot of research online for the best air intake for the 6.4 and found that the S&B Cold Air Intake seemed to be favored over the other brands. I ordered mine from Rudy's Diesel and I like it. Simple to insatll. Gained about 1-1.5 mpg. You might wanna check on upgrading the intercooler intake pipe. I installed one and could tell that the engine was breathing better compared to the stock pipe and noticed a small increase in mpg. Wanna order a Spartan tuner and do the dpf delete next.
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Old 03-29-2014, 06:28 PM   #24
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I also have a 08 F450, I did a lot of research online for the best air intake for the 6.4 and found that the S&B Cold Air Intake seemed to be favored over the other brands. I ordered mine from Rudy's Diesel and I like it. Simple to insatll. Gained about 1-1.5 mpg. You might wanna check on upgrading the intercooler intake pipe. I installed one and could tell that the engine was breathing better compared to the stock pipe and noticed a small increase in mpg. Wanna order a Spartan tuner and do the dpf delete next.
A 1.5MPG increase on intake only?
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Old 03-29-2014, 09:30 PM   #25
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James,
My 450 is never lighter than 9900 and usually at 10400 for travel, sometimes higher if heading out for a long job.
Joe
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Old 03-29-2014, 11:41 PM   #26
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Yeah around a 1 -1.5 mpg better with just the truck, not towing. I havent been on a long enough trip to figure mgp towing yet. I would love my truck more if it had the transmission that the 6.7 had in it, that one more gear to get the rpm's down. I seen where Ford is redoing the F450 for 2015, it would be nice to upgrade but I'd rather put some money in my truck compared to starting all over with a $70k truck.
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Old 03-30-2014, 07:12 AM   #27
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Yeah around a 1 -1.5 mpg better with just the truck, not towing. I havent been on a long enough trip to figure mgp towing yet. I would love my truck more if it had the transmission that the 6.7 had in it, that one more gear to get the rpm's down. I seen where Ford is redoing the F450 for 2015, it would be nice to upgrade but I'd rather put some money in my truck compared to starting all over with a $70k truck.
The final gear ratio between the 5R110W and the 6R140 is the same. Gears 1-5 are all different though.
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Old 03-31-2014, 07:28 AM   #28
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Wingnut60,
Thanks for the reply. I think you hit the nail on the head, I just have to live with it. I got the F450 because it's more than I need and puts me under GVWR, GCWR, and GVWR(5th wheel). Safety trumps everything and I have read too many mixed reviews on all of these "upgrades". I am curious about your comment about oil levels climbing. Can you elaborate?

Thanks,
Bodiemax
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