XDP F.A.Q

Diesel Performance

What is the Particulate Filter?
The Particulate Filter also know as the DPF, is a device designed to remove diesel particulate matter or soot from the exhaust gas of a diesel engine. Wall-flow diesel particulate filters usually remove 85% or more of the soot, and can at times (heavily loaded condition) attain soot removal efficiencies of close to 100%. A diesel-powered vehicle equipped with functioning filter will emit no visible smoke from its exhaust pipe.
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What is the best programmer for my truck for fuel mileage?
Actually there is no “best programmer” for any truck. Choosing the right programmer is based on what you are using the truck for and what your main objective is with it. Now there are some units that are better than others based on what you are looking for, but the first step is deciding what you want out of your truck.
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Why is a mandrel bent exhaust better then my stock system?
FLOW! That is the main reason to go with an aftermarket mandrel bent exhaust system. What is mandrel bent you ask? Mandrel bending is a process in which the exhaust tubing is bent in a way that there are no “crinkles” or indentations in the piping causing a reduction in airflow, meaning that the piping is the same diameter throughout the entire exhaust system. Typical gains are increased throttle response; lower exhaust temps, better fuel mileage and big smile on your face.
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Do I really need a 5” exhaust?
Technically no. The biggest reason people choose a 5" system over a 4" is for sound. While both kits will lower egts and gain fuel mileage, the 5" system will cause you to loose a little bottom end torque. However, one of the trucks that will benefit from a 5" kit is the new 04.5+ Dodges. Because these trucks not only already come with a 4" system but also produce so much torque at the lower end they will usually see the best results from a 5" kit.
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Where can I find the build date on my truck?
Most build dates can be found on the information label on the inside of the driver door jam. This label will tell you anything from the VIN number to the recommended tire pressure.
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What is the OBD port?
The OBD port a 16pin plug found at the bottom of the dashboard on all 1994 and up vehicles that allows you to read, program and alter the vehicles computer.
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What is the max EGT I should be careful of?
The typical max safety EGT setting for most aftermarket chips and tuners are 1350. That means once your exhaust gas temperatures reach this level if you have a unit that has safety features built into it, it will set off an alarm of some sort to let you know to back out of it. Most units in fact with these features will do it automatically. It’s not recommended to go over that temp because over a period time it can cause internal engine damage.
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Why is my 409 stainless exhaust rusting?
409 stainless will get surface rust however it will never rust through. The reason for that is it’s not 100% stainless. It has 11% chromium and 1% manganese.
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Is an enclosed intake system better then an open style?
In some cases, yes an enclosed system will be better. If you are mostly driving in very dusty, wet or muddy areas an enclosed system, similar to your stock set up, is much more beneficial to you. By keeping the filter element away from debris it will not only extend your filter life but also increase your overall performance and economy.
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Will I have to weld my new exhaust together?
No. All of the aftermarket systems we carry are designed to be direct bolt on with common hand tools in your driveway. In some cases the stock system will have to be cut to get it out from under the truck but that’s it.
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I have a 5th wheel, why can’t I run a dual exhaust?
If you have a 5th wheel or hide-away hitch on your truck that extends below the bed and inside the frame rails, this will cause an interference with the driver side tail pipe installation. As you can see in the picture the driver side pipe crosses over from the passenger side very close to the bottom of the bed floor. This will still clear the spare tire though. If you have any questions on if a kit will fit your truck please call in advance.
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How long will it take to install my exhaust?
Average install time on a single turbo back exhaust is about 1-2 hrs. A cat-back single system usually is about .5-1 hr. A dual exhaust usually takes a bit longer, typically around 2-3hrs. All of which can be done with common hand tools.
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What is the difference between a programmer / tuner and a module / chip?
This is one of the most popular questions we get. The difference between the two is that a programmer / tuner installs inside the vehicle via the OBD port and re-flashes the truck with a new program storing the stock program in the programmer / tuner.
A chip / module either install under the hood by “piggy backing” the stock plugs and sensors or plugging directly into the trucks ECU inside the truck. Both of these methods in most cases require no cutting, but may require splicing into an under hood harness.
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What does stacking mean?
Stacking means running more than one performance electronics unit on a truck at a time. This is a very tricky and precise operation. There are many variables that come into play when stacking, making sure you don’t have too much timing advance or too much fuel is key to picking the correct “stack package”. Some units like a TS MP-8 module, which is known as a pressure box, will only add fuel. This makes it an ideal unit for stacking w/ something like an Edge chip that adds both fuel and timing. Choosing the wrong combo can result in burnt or cracked pistons, blown head gaskets and other costly damages. So if you have any questions about “stacking” please don’t hesitate to give our knowledgeable sales staff a call.
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What is a core charge?
A core charge is an acronym for "Cash On Return". These are rebuildable parts that can usually be redeemed for a portion of their original purchase price. Most companies will reuse the case of a transmission, the core of a valve body or even an internal part of a torque converter that is either no longer available or much to expensive to buy new and can be reused on the newly manufactured part. These charges are refundable though once you send in your original part.
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