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6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis SPONSORED BY:

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  #1  
Old 07-05-2010, 10:54 AM
OTTOBOTZ OTTOBOTZ is offline
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MPG-6.4l

-What are ya'll averaging for MPG before and after chipped with the 6.4L?

-What kind of chips are ya'll runnin'?

-What is the best combo. for chip and intake concerning MPG?

-Does removing the DPF really increases the MPG?

-Does removal of the DPF affects the warranty, and do you have to reinstall for emissions testing?
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Old 07-05-2010, 11:22 AM
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Bone stock I got about 16 mpg per tank or fill up. Now with the mods I've done which is in my sig I get 20-22 mpg per tank or fill up. And the warranty just depends if the service manager will over look it or if you have a relationship like I do with a local dealership and they don't care.
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Old 07-05-2010, 12:24 PM
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you would need to put what ever back on for warranty work and emissions testing. Most have seen some good increases with deleting the DPF.
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Old 07-05-2010, 12:36 PM
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Bone stock I got about 16 mpg per tank or fill up. Now with the mods I've done which is in my sig I get 20-22 mpg per tank or fill up. And the warranty just depends if the service manager will over look it or if you have a relationship like I do with a local dealership and they don't care.
is that all highway? what about towing?
Sam
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Old 07-05-2010, 01:11 PM
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It would be nice if posting MPG to note city or highway, stock or whatever, towing, etc.

Just saying I get "X" MPG doesn't really say much.

Mike
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Old 07-05-2010, 01:34 PM
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Quote:
Originally Posted by OTTOBOTZ View Post
-What are ya'll averaging for MPG before and after chipped with the 6.4L?

-What kind of chips are ya'll runnin'?

-What is the best combo. for chip and intake concerning MPG?

-Does removing the DPF really increases the MPG?

-Does removal of the DPF affects the warranty, and do you have to reinstall for emissions testing?
I get about 12-13 city, and 16-17 highway. That is 100% stock.

The most popular chip/tuner seems to be the Spartan tuner.

It seems that most people report MPG gains after deleting the DPF, but most of the time that goes along with a tune as well.

And absolutely 100% removing the DPF affects warranty! If you read your owners manual that comes with the truck you will see Ford talks about emissions system modification and "tuners" and "chips".

As jac08f250 said though, you may get lucky and have a service manager that will look the other direction. However if something happens to your truck directly as a result of modification don't you think you should take responsibility for it? Instead of making Ford pay for it?
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You do need to haul something however. That truck won't even know that it is pulling a jeep. Like putting a golf bag in the trunk of a mustang GT.
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Old 07-05-2010, 05:12 PM
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is that all highway? what about towing?
Sam
Yeah I mostly do hwy driving. And I haven't towed anything yet with the new truck.
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Old 07-05-2010, 05:39 PM
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thanks..

08 F350 DRW (17 in wheels), 4.10 rear

towing show car, closed trailer, 7000lb, get 9
empty round town (15 mi each way) get 12.6
empty hiway get 14.5-15.(70-75mph)

sam
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Old 07-06-2010, 01:31 PM
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So if the Spartan kit with DPF delete is $1250 and you go from 12MPG to 16MPG with the kit (average) and you drive 12K miles per year and diesel is $3.10/gallon then it takes about 2 years and 25,000 miles to break even on the cost of the kit. This assumes a lot and doesn't factor in the possible warranty denials which could be *very* costly.

I dunno....sounds like it's a big risk vs reward at least to me.....
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Old 07-06-2010, 03:36 PM
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So if the Spartan kit with DPF delete is $1250 and you go from 12MPG to 16MPG with the kit (average) and you drive 12K miles per year and diesel is $3.10/gallon then it takes about 2 years and 25,000 miles to break even on the cost of the kit. This assumes a lot and doesn't factor in the possible warranty denials which could be *very* costly.

I dunno....sounds like it's a big risk vs reward at least to me.....
AND you have to KEEP that 33% improvement (4 of 12)
at 3.10/gall you need 403 GALLONS of improved mileage to cover the cost.. regardless how far u drive.

if Towing mileage is only 1 mpg improved.. then it will be slower payback.

SO.. it sounds like this is not a 'payback' scenario.. more a more power scenario, less restriction..(less repair?)

sam
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Old 07-06-2010, 03:55 PM
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Quote:
Originally Posted by sdetweil View Post
SO.. it sounds like this is not a 'payback' scenario.. more a more power scenario, less restriction..(less repair?)

sam
Sam:

I'm not familiar enough with diesels to understand the "less repair" part of your statement. How does less restrictive lend itself to less repair?
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Old 07-06-2010, 04:14 PM
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I am guessing that 'some' think that a less restrictive exhaust 'could' lead to less maintenance issues.. I'm not sure this is justified, but I have seen it expressed as a positive value.

Sam
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Old 07-06-2010, 09:03 PM
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now figure in ownership miles.
diesels can go 300k miles or more (without fuel in the base of course lol.)

i know one thing,the sooner that DPF crap is removed,the sooner you stop pouring in fuel into the base of the engine.
long term,the poor 6.4l doesn't stand a chance.you know what diesel does to main and rod bearings? it's not pretty.
you dont want fuel in your oil.....period.let alone watching the oil grow a whole quart! or more! ouch.such a shame.these engines are going to get a bad rep due to this over the years,you watch and see.

i know years down the road,if i go looking for one,i wont touch one without documentation of DPF delete @ low miles.



Four Lethal Diesel Engine Oil Contaminants
Fuel Dilution
Frequent starts of an engine, excessive idling and cold running conditions can lead to moderate fuel dilution problems. Severe dilution (excess of two percent) is associated with leakage, fuel injector problems and impaired combustion efficiency. These are symptomatic of serious conditions that cannot be corrected by an oil change. According to one reference, 0.36 percent of total fuel consumption ends up in the crankcase. Problems associated with fuel dilution include:





*

Diesel fuel dilution in cold operating conditions can cause waxing. During startup, this can result in low oil pressure and starvation conditions.
*

Diesel fuel carries unsaturated aromatic molecules into the motor oil which are pro-oxidants. This can result in a premature loss of base number (loss of corrosion protection) and oxidative thickening of the motor oil, causing deposits and mild starvation.
*

Fuel dilution can drop the viscosity of a motor oil from say, a 15W40 to a 5W20. This collapses critical oil film thicknesses, resulting in premature combustion zone wear (piston, rings and liner) and crankcase bearing wear.
*

Fuel dilution from defective injectors commonly causes wash-down of oil on cylinder liners which accelerates ring, piston and cylinder wear. It also causes high blow-by conditions and increased oil consumption (reverse blow-by).
*

Severe fuel dilution dilutes the concentration of oil additives and hence, diluting their effectiveness.
*

Fuel dilution by biodiesel may result in higher than normal problems compared to diesel refined by crude stock. These problems include oxidation stability, filter plugging issues, deposit formation and volatility resulting in crankcase accumulations.





Four Lethal Diesel Engine Oil Contaminants
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Old 07-06-2010, 09:52 PM
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Quote:
Originally Posted by Biggziff View Post
So if the Spartan kit with DPF delete is $1250 and you go from 12MPG to 16MPG with the kit (average) and you drive 12K miles per year and diesel is $3.10/gallon then it takes about 2 years and 25,000 miles to break even on the cost of the kit. This assumes a lot and doesn't factor in the possible warranty denials which could be *very* costly.

I dunno....sounds like it's a big risk vs reward at least to me.....
If you only drive your diesel 12k miles a year then you don't need a diesel. I'm getting 21-22 on the hwy where before I was getting 16-17. And I drive 60k miles a year so I will be making money in about a year maybe less. So it makes sense to me to get it plus I have a great realationship at my local ford dealer so I don't have to worry about voiding my warranty. If they need me to put everything back to stock I can.
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Old 07-06-2010, 10:56 PM
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Leave you stock air filter. My uncle has had two engine go over his aftermarket air filter on a 6.4 and he brags up how he gets 2 better mpg over it. I have a 2003 F450 with the 6.0 and I get 9.5-10 and I wouldn't care if I could get 14 with a air filter kit. Fuel is cheaper than a engine.
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Old 07-06-2010, 10:56 PM
 
 
 
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