Is a Cummins B6. 7 SCR Delete Worth This for Your Vehicle?
In the event that you've been coping with constant DEF head aches, a cummins b6. seven scr delete has probably crossed your brain more often than once. It's the common conversation within shops and on forums because, let's be honest, the exhausts equipment on modern diesel engines can be a genuine nightmare when it starts acting upward. The B6. seven is an total workhorse of an engine—you'll find it in everything from Ram memory 2500 and 3500 pickups to school buses and medium-duty delivery trucks—but that reliability often will get overshadowed with a "See Dealer" light upon the dash and also a countdown to sagging mode.
Usually, the frustration begins small. Maybe it's a wonky sensor or a "service exhaust system" information that pops up and then vanishes. But eventually, this turns into a cycle of purchasing expensive Diesel Wear out Fluid (DEF), dealing with clogged filters, and worrying when the truck is going to de-rate whilst you're in the center of a job. That's precisely why so many owners begin looking into removing the Selective Catalytic Reduction (SCR) system altogether.
Why People Consider Removing the SCR
The main reason anyone looks into a cummins b6. 7 scr delete will be simple: reliability. Once you rely on your own truck for work, every hour this spends in the particular shop is money out of your pocket. The SCR strategy is complex. This involves a tank for the OUTL, a pump, a good injector that tools the fluid to the exhaust stream, and a catalyst where the chemical reaction happens. In case any single part of that string fails—whether it's a frozen line within the winter or a crystallized injector—the computer kicks the particular truck right into a decreased power mode.
It's incredibly frustrating to have a perfectly healthy motor that refuses in order to pull a movie trailer because a messfühler thinks the urea mix is slightly off. By removing these components, you're essentially stripping away the most common points of failure on the modern B6. 7 system. You're left with a "dumb" exhaust that will just lets the particular engine breathe, that is how these engines were originally made to run before the particular regulations got so tight.
One more big factor is usually the price of upkeep. DEF isn't free of charge, and more than a hundred thousand miles, these jugs or pump visits increase. Then there's the. The particular SCR brick, the DPF (Diesel Particulate Filter), and everything the associated hardware weigh a significant amount. Shedding that weight and reducing the backpressure on the turbo can make the particular truck feel a whole lot more responsive.
Exactly what Actually Happens During the Process?
When we talk regarding a cummins b6. seven scr delete , it's rarely simply one thing. It's usually part associated with a "full delete" which includes the DPF and frequently the EGR (Exhaust Gas Recirculation) system as well. The process usually falls into 2 main categories: the hardware and the software.
Upon the hardware aspect, you're looking at removing the restrictive areas of the exhaust system pipe. You change those bulky filter systems and catalysts using a "race pipe" or even a full straight-pipe exhaust system. This is the part that actually lets the engine exhale freely. Some men go with the 4-inch or 5-inch pipe depending on how much noise they want and what they're trying to achieve with their build.
The software program side, or maybe the "tune, " is really the most critical part. If you simply take the hardware off, the truck's ECU (Electronic Control Unit) will freak out. It can note that the detectors are missing or reporting "out of range" data and immediately put the particular truck into limp mode. An appropriate tune reprograms the ECU to ignore these sensors and prevent the particular injection of DEF. It essentially informs the computer, "Hey, don't worry regarding the SCR program; it's not generally there anymore. " This is where you may also pick up a few extra horsepower and torque if you would like it, though many people just stick with a "stock power" delete tune for the sake of long life.
The Real-World Benefits
When the cummins b6. 7 scr delete is finished, the particular first thing most drivers notice will be the fuel economy. It's not uncommon to see a noticable difference associated with 2 to four miles per one gallon. Why? Because the particular engine isn't fighting against a literal plug in the particular exhaust pipe anymore. Furthermore, the vehicle doesn't have to experience "regen" series, where it pumping systems extra fuel in to the exhaust simply to burn away soot. That's wasted fuel that's right now staying in your tank.
Then there's the throttle response. Without that massive amount of backpressure, the turbo can spoil up much faster. The truck seems "snappier. " This doesn't necessarily imply you're racing individuals at stoplights, yet when you're blending onto a road with a weighty load, you can feel the difference.
Long-term engine health is another biggie. While the SCR sits further back in the exhaust, it's usually deleted alongside the particular EGR. The EGR system cycles dirty exhaust soot back to your intake. With time, that "soot-cake" builds up in your consumption manifold and may even contaminate your oil. Deleting the entire emissions suite indicates your engine is just breathing clean, clean air, which typically leads to cleaner oil and also a longer-lasting engine.
The Risks A person Can't Ignore
Now, I'd end up being doing you a disservice basically didn't mention the disadvantages, because they are pretty significant. First and foremost is the legal side associated with things. In several places, tampering with exhausts equipment is a big no-no. Depending on where you live, you may run into issues with annual inspections. In case your state does a visual check or plugs into the OBDII port in order to check for emissions readiness monitors, a deleted truck may fail all the time.
Then there's the particular warranty. If you've got a newer vehicle with a staying factory warranty, a cummins b6. 7 scr delete will void this faster than everything else. If your tranny goes out or you have an electric issue, the seller might try to blame the melody or maybe the lack of emissions gear to get out of spending money on the fix. It's a "pay to play" situation. You have to be okay along with being your very own warranty department.
Resale value is usually another tricky a single. While some buyers in the used marketplace specifically look regarding deleted trucks due to the fact they want the particular reliability, many dealers won't take all of them as trade-ins mainly because they can't legally sell them. You might find yourself having to sell the particular truck privately, or even keeping all your own old stock parts in the garage area just in situation you need in order to place it back in order to stock 1 day.
Making the ultimate Contact
Deciding to go through along with a cummins b6. seven scr delete is really a private choice that is dependent on how you occurs truck. When you're idling the lot, doing short trips, or using the truck as being a heavy-duty workhorse, the emissions system is definitely going to give a person trouble eventually. That's just the character of the animal. For those folks, the particular satisfaction knowing the truck won't keep them stranded is usually often worth the legal and warranty risks.
However, if your pickup truck is running great and you're nevertheless under warranty, this might make sense in order to leave it on your own until the problems actually start. Some guys get 200, 000 miles from their factory exhausts gear without a single hiccup. It's all about the good luck of the draw and how you sustain it.
In case you do determine to pull the particular trigger, don't proceed cheap. Buy high-quality tuning from a reputable source and make sure the hardware matches right. A negative track can cause even more problems than the SCR system ever did, including high EGTs (Exhaust Gasoline Temperatures) that can melt pistons in case you aren't careful. Do your research, talk to various other owners, and make sure you're ready for the trade-offs. It's your vehicle, after all—you're the particular one who has to reside with this every day.