4''/5'' Turbo-Back for 2003 Dodge 5.9L Cummins DPF Delete Race Pipe

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Product Information +
- Brand: SPETUNER
- SKU: #10099
- Availability: Many in stock
- Product Type: DPF & Cat Delete Pipe
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PLEASE NOTE!
- Description
- FAQ
- Review + Q&A
Product Overview
This 4''/5’’ Turbo-Back DPF Delete Race Pipe is built specifically for the 2003Dodge 5.9L Cummins diesel engine, designed to increase exhaust flow and enhance engine performance. Here’s a quick rundown of what makes it stand out:
· Key Features:
o Fits: 2003 Dodge 5.9L Cummins
o Material: Premium T-409 stainless steel, 2mm thick – built to withstand high temperatures and heavy-duty use
o High-Flow Design: 4’’/5’’ exhaust that reduces backpressure and improves both power and fuel efficiency
o Usage: Perfect for off-road adventures, heavy towing, and everyday driving
Why Consider a DPF Delete?
What is a DPF (Diesel Particulate Filter)?
A Diesel Particulate Filter (DPF) is designed to capture harmful particles from diesel exhaust, helping to reduce emissions. However, DPFs are prone to clogging, especially during city driving or short trips. This clogging can increase backpressure, reduce engine performance, and lead to frequent, costly maintenance.
· Common Issues with DPFs:
o Frequent cleanings required, adding maintenance costs
o Reduced power and increased backpressure when clogged
o Possible dashboard warnings or error codes impacting your driving experience
The Benefits of Removing the DPF
If you’re looking to maximize power and fuel economy, a DPF delete could be the solution you’re after. Here are some key advantages:
· Reduced Backpressure: High-flow exhaust reduces exhaust resistance, allowing your engine to breathe more freely.
· Improved Fuel Economy: Less restriction means smoother fuel flow and better mileage.
· Increased Power: Reduced backpressure can unleash more of your engine’s potential power, especially noticeable when towing or accelerating.
Do 2003 Dodge 5.9 Cummins Models Need a DPF Delete?
For 2003-2007 Dodge 5.9L Cummins models, some may have a factory-installed DPF, while others may not. Check your vehicle’s configuration to see if a DPF delete is right for you. Either way, installing this race pipe can significantly improve your exhaust system’s performance.
Product Features and Specifications
Durable Materials Built to Last
Crafted from T-409 stainless steel with a 2mm thickness, this race pipe is built for the long haul, handling high temperatures and heavy loads. T-409 stainless steel offers excellent corrosion resistance and has a slight magnetic property, making it easy to verify its quality with a magnet.
High-Flow Exhaust Design
The high-flow design minimizes exhaust resistance, letting your engine operate more efficiently for improved power output. This also helps reduce exhaust temperatures, enhancing engine stability in demanding conditions.
Compatibility and Fitment
This DPF delete race pipe is compatible with 2003 Dodge 5.9L Cummins diesel trucks. It’s designed for straightforward installation and can handle the demands of off-roading, towing, and daily driving alike.
What You Can Expect After a DPF Delete
Boosted Power and Acceleration
Removing the DPF reduces exhaust resistance, which can deliver a noticeable boost in power, especially when accelerating. This enhanced response makes a difference when you need it most.
Improved Fuel Efficiency
With the reduced resistance, you’ll see improved fuel efficiency, potentially cutting fuel costs by 10-15%. This makes a significant difference during long drives or high-load conditions.
Lower Maintenance Costs
By eliminating the DPF, you can say goodbye to frequent cleanings and repairs, saving time and money on upkeep while reducing the chances of DPF-related issues.
Installation and Operation Guide

Click to view the installation diagram and access the installation PDF document.
https://spetuner.com/blogs/instruction/step-by-step-guide-for-5-9l-cummins-dpf-delete-installation
Ready to Upgrade?
Take the next step towards an optimized exhaust setup with the 4’’/5’’ Turbo-Back DPF Delete Race Pipe. Click “Buy Now” to order yours, and if you have any questions along the way, we’re here to help.
Support and After-Sales Service
Once you’ve made your purchase, you’ll have access to comprehensive support and after-sales services. We’re here to help with any questions or installation tips to make your experience seamless.
Is My 2003-2007 Dodge 5.9 Cummins Compatible with a DPF Delete?
This 4’’/5’’ Turbo-Back system is tailored for 2003 Dodge 5.9L Cummins trucks, providing a fit that’s both precise and performance-oriented.
How Does DPF Delete Impact Emissions Regulations?
DPF deletes may not be compliant with local emissions regulations, so it’s essential to verify your area’s legal requirements. This product is intended for off-road or non-highway use.
How Much Power Can I Expect to Gain?
DPF deletes can yield noticeable power improvements, especially in high-load situations like towing or off-roading. Expect better acceleration and overall engine response.
Q: What does the "DPF race pipe" mean?
A: "DPF race pipe“also called "DPF Delete Pipe", only removes the part of DPF and keeps other parts.
Q: What does "DP-back/Downpipe-back" mean?
A: This means that the exhaust system runs from the downpipe all the way to the end of the exhaust pipe, replacing everything from the downpipe outlet back. This typically includes the mid-pipe, catalytic converter (if present), and muffler.
Q: What does "Turbo-back" mean?
A: This means that the exhaust system runs from the turbocharger all the way to the end of the exhaust pipe, replacing everything from the turbocharger outlet back. This typically includes the downpipe, mid-pipe, catalytic converter (if present), muffler, and tailpipe.
Q: What is your DPF made from? Stainless steel or aluminum?
A: They are made of 409 stainless steel.
Q: Do your DPF deletion kits need to purchase additional parts?
A: Our DPF delete kit comes with all the parts to complete the DPF deletion, normally, there is no need to purchase anything else.
Downpipe-Back/Dp-back pipe
Q: Does your Dp-back pipe can work with stock parts?
A: Yes, our Dp-back pipe can fit perfectly with the stock Downpipe and stock bolts.
Cab & Chassis
Q: Why do some of your dpf delete kits not work on cab and chassis models?
A: The Cab & Chassis has a relatively longer chassis and requires a tube specifically designed to fit the Cab & Chassis model. We mention Cab & Chassis in the title of our products for Cab & Chassis models, so you can check for yourself. For further assistance, you can contact our customer service.
Ended up cutting the fitting off my old exhaust that mounts to the turbo and welding it onto the new exhaust because the one that came with it was to small. Hangers dont line up and exhaust contacts spare tire. Eventually got it to fit on but it was not the 1 hr install I was expecting.
4''/5'' Turbo-Back for 2003 Dodge 5.9L Cummins DPF Delete Race Pipe
Quality exhaust!!! Fit and finish was excellent. Sounds great too
Let customers speak for us
from 160 reviews
Honestly, the exhaust was much nicer than I expected fitment wise. It fit just as well if not better than exhaust systems I have installed in the past that were a few hundred more dollars. Shipping time was pretty good as well… received it the same week I ordered it. That’s about all I can speak on for now as I have only put about 100 miles on it.

Everything you need and nothing you don't. The parts install really impressively smoothly.
Could definitely use better / ANY instructions, especially since youtube vids on deleting trucks have been taken down lately.
It took a day of searching and watching vids here and there to find out it is extremely important to go in a certain order:
1: install the tuner first
2: install a "smog equipment has been removed" tune even though the truck still has the equipment at the moment.
3: remove the dpf and egr bits

Money well spent. Install was simple. Do not misunderstand simple with easy. Although it was easy for me. Install of the MINI MAXX V2 was a bit different. The video provided on the site was not how my installation went. In fact it was very different. With that, it did go as expected. The tuner does have some what of a learning curve, not very much info out there now with all the bureaucratic garbage we, in the US, have to contend with. It is out there, just TOUGH to glein. The removal of that gargantuan nightmare of an exhaust filter was not for the faint of heart. It is heavy, and the connectors on all those sensors can be challenging. It will be worth the struggle. The removal of the Extra Grace Required part was the hardest part for me. Having had my exhaust and turbo out 2 times, one of the bolt heads got damaged in the last re-install. That took a huge amount of patience and correctly applied downward force and a special tool. FYI THE PYROS DO NOT READ CORRECTLY ON 2011 F350 IT WILL ONLY READ 1193°!
Then the block off bypass parts, easy install. Looks great and does everything I expected. As a plumber I was able to use some expansion couplings and cut the water tubes and did not use the supplied hose. Then back on the ground to install the exhaust pipe. That was a challenge. The hanger bracket wasn't quite on par and was bent a bit. Nothing like a torch and a quality set of Pittsburgh 3/4" box end wrenches. Got that squared away, lined everything out and the slip joint went in nicely. I only used one of the 3 bolt flange bolts because I saved 2 of the pressed in studs. The down pipe connector flange was a special kind of hurrah. Perseverance, busted knuckle, and lots of upward pressure, accomplished that.! Overall I like the kit, don't like it doesn't come with instructions, but if you're buying this kit I'm betting you're already a mechanic anyway. HUGE THANKS TO SPETUNER.
One more thing, FedEx delivered my 1st kit to 2 wrong addresses, SPETUNER made it right and sent out a new kit for my. That is worthy of my review!

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EGR/DPF/DEF Delete 2011-2016 LML 6.6L Duramax All-in-One Kit

Great product and customer service.

i love it

Missing any sort of directions but relatively straightforward nonetheless. In my experience, the SPE logo faces correctly forward when mounted, seems like other folks have complained about that.

Fit perfect, programing was even better easier.

Clean oil!!!

Worry-Free Purchase

Awesome product. Very happy with ease of use and quality. Only bad thing was I got no stickers to add to my box. Even still 5 stars all the way.

Exhaust pipe fit great! Everything from the bends of the pipe to the hanger location as well as the clamps, would definitely recommend to anyone looking for an upgrade for their 2.8 Duramax.

DPF/DEF/EGR Delete 2011-2019 6.7L Powerstroke All-in-One Kit

All together was a good experience, easy install only took about 5 hours to do only thing I could recommend for the people who aren't as mechanically inclined is instructions