This is a question we get 1,000,000 instances an afternoon. Since 2007 all Dodge Cummins 6.7, Ford Powerstroke 6.4, and Chevy Duramax 6.6 trucks come from the manufacturing facility prepared with a particulate clear out to fulfill more difficult emissions standards. A diesel particulate filter (DPF) is a device that traps the soot and unburnt gas from diesel combustion. You may additionally have observed if you have one the 07+ diesel pickups that it never puts out any black smoke at all. The DPF will seize 90% or better of all dangerous diesel emissions. Once the DPF has end up "complete" of soot, it will want to have a regeneration cycle a good way to burn all the soot out. You can also have observed a light in your dash every so often that indicators you that the DPF is in "regen" or "cleaning clear out."
Basically what is occurring for the duration of this manner is that the engine's pc has determined from the information that it gets from the sensors set up within the exhaust that the DPF has filled up beyond it's proper restriction. The laptop then opens the EGR (exhaust recirulation valve) introducing hot exhaust into the consumption to help get get exhaust fuel temps higher and also injects a small shot of gas into the cylinders when the exhaust valves are open. The raised exhaust temps and the small amount of fuel then burn out the particulate (soot) that the DPF has accrued considering it's remaining regen. Once the computer gets readings from the sensors in the exhaust that the clear out is flowing an appropriate restrict again, it ends the regen cycle. The frequency of this cleaning cycle isn't like car to car relying on use, mileage, and engine condition.
Myths about the DPF system:
1. The traces on the side of the exhaust are gasoline strains that dump gasoline without delay into the filter and the opposite connections are glow or spark plugs that ignite the gas to smooth the clear out.
Not in any respect. As I stated above, the fuel needed for cleansing the dpf is entered into the engine cylinders by path of the regular gas injectors throughout the exhaust stroke of the engine. A small shot of gasoline is pushed out with the rest of the exhaust gasoline. The metal lines everybody sees at the side of the DPF filter out are for a stress sensor that is usually attached to the side of the transmission or body. They have the long steel tubes on them to get the temperature of the exhaust they're measuring down earlier than it reaches the sensor. Again, I do not care what the tech on the dealership says approximately the ones lines, if he says they're gas strains (which I listen all of the time), he's an idiot and you ought to take away your truck from there as quick as feasible. The different wires you spot going to the exhaust before and after the DPF clear out are not spark or glow plugs. They are thermocouples that measure exhaust temperature. The computer uses exhaust temperature and strain before, at, and after the dpf to measure how plugged the dpf is and when it's time to perform a regen.
2. I can just remove the DPF filter out and placed a bit of pipe in there.
Sorry, no. If you remove the DPF filter out and make no changes to the engine's laptop, it's going to input both a limp mode or a regular state of regen. Simply positioned, all of the sensors and the dpf need to be in ideal working order when strolling the inventory vehicle's programming in any other case your truck will go haywire and you will no longer be able to pressure it.
Common problems with the DPF system:
1. Poor Fuel financial system - This is the primary grievance we get from customers who've vans prepared with a DPF. Most customers who traded of their pre-07 diesel pickups were completely sad with the lack of gas mileage that used to revel in. The average gas economic system we pay attention human beings report on the DPF prepared trucks is typically 12-14 mpg. Many of those oldsters traded in vans that did 18-22 mpg and are completely disgusted.
2. Excessive regens - Many of our clients who use their vehicles for paintings complain about very frequent regens that kill their gas mileage and performance. Many clients who paintings outside inside the iciness had been used to leaving their vintage diesels run all day even as they have been on the process site. The DPF geared up vehicles do not handle this very well. The cooler idling temperature of the exhaust gas will soot up the DPF on an extended rate. It isn't uncommon for those clients to be on their 2d or 1/3 clear out alternate due to the fact the truck went into constant limp mode. The typically dealership reaction is: "You can not let these new vans idle." Which is going over quite nicely with guys who're stuck at a job website online five miles lower back within the woods all day and the temperature by no means receives above ten levels.
3. High replacement cost - If any of you have needed to pay for a DPF replacement out of assurance, you likely had a coronary heart assault while you purchased the bill. A alternative DPF (which isn't always available aftermarket yet) runs more or less $2000-$2600 for the just the filter by myself. And hears the frightening part. DPF existence is anticipated between one hundred twenty,000 and 150,000 miles. If you plan on maintaining your new diesel pickup for a few hundred thousand miles better start a DPF fund.
Four. Restricts overall performance modifications - With the brand new diesel pickups, the potential for horsepower enhancements is exceptional. We have taken all 3 brands of pickups to close to or over 500 rear wheel horsepower and 1000 feet/lbs of torque with just consumption, exhaust, and programming changes. Never has so much overall performance been so clean and low-cost whilst still preserving avenue manners. The handiest trouble is something beyond a small tow type track will irritate the particulate filter. Turning up the engine will produce extra soot with the intention to plug the dpf faster causing extra regens. Many customers who run a 100 horsepower application document very bad fuel mileage and steady regens.
What may be finished to increase DPF life and restriction regens?:
Since we are not allowed by using law to do away with the DPF machine, we are stuck with it in case you want to conform with Federal emissions and keep your truck criminal. Here are a few tips to help mileage and DPF life:
1. Use the proper gasoline - It is sincerely vital and essential to apply extremely low sulphur fuel in any automobile geared up with a particulate filter. High quantities of sulfur in the gas will plug the DPF right away. We get plenty of questions from farmers approximately the purple gas. As some distance as we recognise you can't buy excessive sulfur gas commercially anymore. We have a refinery roughly ten minutes from the store that refines diesel. Both fuels are precisely the identical, their is simply crimson dye introduced to the offroad fuel. It won't hurt something to run the low sulphur red gas. The other question we get asked is ready components. Our advice is to only run merchandise that have been made for diesel fuel. Power Service, K100, Standyne, and Flash Lube for instance are brands that we see no troubles walking. DO NOT upload any type of homemade fixes. Adding a quart of noticed oil, atf, or some thing else in all likelihood isn't always a great idea. It will burn dirty and can clog the dpf.
2. Use the proper engine oil - Make sure you are the usage of an engine oil that is rated nicely for your truck. Some engine oil gets burnt up in combustion no matter what. If you're going for walks oil that isn't formulated for a DPF equipped vehicle, it will soot up the filter sooner.
3. Keep idling to a minimum - Simply put, idling contributes to dpf troubles. Period. Keeping the rpm's accelerated for the duration of will assist. Keeping idling to a minimal is first-rate for those vehicles.
4. Run it difficult from time to time - Don't be afraid now and again when going up a hill to matt the throttle for some seconds. Running the truck hard and getting matters quality and heat will help clear out soot deposits.
I want to take away the DPF. What can I do and what is going to be the benefits?
First issue, it is certainly a criminal offense to cast off or disable any emissions device for any vehicle that is going to be operated on the public highways. If making a decision you need to dispose of emissions equipment for any cause, it is entirely up to you and your mechanic to determine what's safe and criminal to your utility. I do not condone nor endorse disposing of the dpf or every other emissions device. All the examples I talk about under have been tested off-avenue and the mileage assessments have been accomplished on our Superflow chassis dyno that simulate the weight the truck has by myself and whilst towing.
We have performed some checking out on all 3 manufacturers of vehicles to see what consequences can be carried out by eliminating the dpf filter out device. There are many products to be had for off-street and opposition use with a view to disable the dpf system. You need to run a few kind of aftermarket device to disable the machine or there will be troubles whilst you take away the DPF. There are numerous options so one can permit the elimination of the DPF without any horsepower growth and also several alternatives a good way to upload up to 250 horsepower in conjunction with removing the DPF.
Here are the test vans we have finished managed assessments on our chassis dyno with:
Truck #1: 2007.Five Ford F-350 6.4 Powerstroke
Mods: S&B Cold Air Intake, Edge Race Evolution, DPF Delete pipe (rest manufacturing unit exhaust)
Stock RWHP: 285
After Mods RWHP: 471
Average Mileage inventory: 11.8 mpg
Average Mileage mods: 17.4 mpg
Notes: Very simple delete bundle. Overall mileage jumped five.6 mpg on simulated highway using. Horsepower stages variety from 40HP boom to 185 hp increase on the EDGE Race Evolution. Stock air container could pull clear out limit gauge with clean manufacturing facility clear out on even decrease tiers. Air box upgrade a have to for this package.
Truck #2: 2008 Dodge 3500 6.7 Cummins
Mods: Full four" DPF and Cat delete exhaust, Flo-Pro DPF electronics bundle
Stock RWHP: 294
Mod RWHP: 311
Average Mileage Stock: 12.1 mpg
Average Mileage Mods: 18.9 mpg
Notes: We have been without a doubt impressed with this package. The Flo-Pro electronics only disable the DPF system and upload surely no horsepower. The loose flowing exhaust showed some horsepower profits. Mileage check changed into simulated highway using with a truck weight of 8700lbs. Great mileage advantage of 6.Eight over stock. Inexpensive delete bundle for off-avenue work vans.
Truck #3: 2008 F-550 6.4 Powerstroke
Mods: DPF delete into dual five" exhaust, S&B Cold Air Intake, Power Hungry Performance Gryphon programmer
Stock RWHP: 268
Mod RWHP: 447
Avg HWY Mileage Stock: nine.2 mpg
Avg HWY Mileage Mods: 17.3 mpg
Avg TOW mileage Stock: 6.Four mpg
Avg TOW mileage Mods: 14.2 mpg
Notes: This is a package that we prepare to simulate the gains feasible on one of the hard operating vehicles that tows alot. The horsepower growth became dramatic, but the mileage gains had been terrific. We simulated a truck weight of 11,500 lbs for the dual carriageway tests and a trailer weight of 12,000 lbs for the tow test. The motorway mileage tests of the mods showed a 8.1 mpg benefit whilst the towing test also confirmed an incredible 8 mpg gain.
Truck #4: 2009 Dodge 2500 Cummins 6.7
Mods: five" immediately DPF/Cat delete exhaust, S&B Cold Air Intake, H&S XRT programmer
Avg HWY mileage stock:14.6 mpg
Avg HWY mileage mods:21.2 mpg
Notes: We best did simulated hwy mileage checks on this truck. We just used the XRT programmer to cast off the DPF functions from the computer and left the horsepower inventory. The XRT has horsepower boom degrees of 60, a hundred and twenty, 175 horsepower. It will even shut the egr gadget off as well.
Truck #five: 2008 Ford F-350 6.Four Powerstroke
Mods: 4" DPF delete pipe, 5" MBRP dpf lower back exhaust, S&B bloodless air intake, Innovative Diesel custom tuned SCT Livewire
Stock RWHP:289
Mod RWHP: 536
Stock MPG: eleven.6 mpg
Mod MPG: 17.Four mpg
Notes: This truck turned into an animal! The custom tunes had been a number of the smoothest moving of any of the alternatives we've got tried and the strength changed into crazy. There turned into a 247 rear wheel horsepower increase over stock on the highest stage and the rear wheel torque turned into over 1000 feet/lbs! You might assume there might be a extreme drop in the mileage department, but we were amazed to see the truck benefit almost 6 mpg at even this horsepower degree.
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In conclusion, in case you are seeking out a few critical horsepower for the drag strip or the pulling song, these new not unusual rail diesels make severe horsepower with little or no modification as soon as the dpf is out of the way. Also, if you handiest operated your truck off-road there are some extraordinarily astounding fuel financial system profits available by getting rid of the dpf filter out. It is surely too awful that we could not run the trucks on public roads with the dpf eliminated. We clearly would have fairly effective vehicles that get remarkable mileage and feature amazing avenue manners.
Thanks for studying,
John Anderson
Little Power Shop - [http://www.Littlepowershop.Com] - 1-877-227-0823
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