This is a great company and Tyson assisted me with a technical questions.
Thank you
Best thing I bought for my truck…had couple hiccups with the install contacted customer support and Casey was super helpful with every step!
The truck is finally breathing the way it should, and I’m really happy with how it sounds.
The biggest hiccup was getting the tune done. HP Tuners wasn’t very clear about which software to use. The instructions recommended using the beta version, but when it came time to clear the check engine light, I had to switch over to their regular scanner software instead.
Other than that, everything went smoothly! Overall, I’m really happy with how everything turned out.
I recommend diesel dudes in every way and aspect professional and very informative in every aspect as soon as I bought everything, the sale rep reassure to me that it was an easy and he sent the every possible information to make sure and ensure that I can follow the instructions personally it is dummy proof so I recommend them and the install was Flawless and perfect
The Diesel dudes are the best,they are great to work with especially Tyson ,it's a very easy process and what a difference I have a whole new truck.
Tyson helped me out with a question I had post install.
Great customer service!
I own a 2018 GMC Sierra 3500 Denali Crew Cab LB that is currently stock.
I began my quest two weeks ago to find a good full delete kit after purchasing PPE exhaust manifolds with up and down pipes. After an exhausting comparison of different competitive manufactures, and what seems like and endless back and forth of at least 12-15 emails, your Sales Support Team Member Adrian, took the time to answer in great detail, all of my questions. I am now so much more confident in how to properly use this full delete kit to delete my truck the right way, and I’m glad I can now trust The Diesel Dudes for the best full delete kit on the market. Adrian was also nice enough to also give me a generous military discount on my kit. It’s now Veteran’s Day, and I eagerly pulled the trigger on my purchase, which included the 2017-2023 GM/Chevy Duramax 6.6 L5P Full Delete Bundle, (DEF/CAT back 4 inch exhaust, 4 inch muffler, without down pipe, EGR Delete kit and Tuner) and I also purchased a Tuner Harness Plug Kit | GM/Chevy 2011-2023 | Shibby Engineering.
With this, I now have 80% of the hard parts need to complete my build. I will finish this build using a Duramax Tuner, Mach 1 64mm turbo, HSP Diesel cold air intake, with cold side and hot side pipes, Wehrli Custom Fab Y bridge, a CCV Re-rout Kit and Catch Can from VSE, and finally the Air Dog Fuel and filter system to pump fuel to this beast.
Again, thank you Adrian and The Diesel Dudes for everything. I can’t wait to get my kit and start deleting my truck.
Bill Wincer
US Navy Retired
Cleveland, Ohio
November 2026
Great product,I’m really satisfied with the tunes and performance with my truck after everything was installed. Mark was really helpful answering in a timely matter any questions I had regarding tunes and package delivery.
Great customer service from Cynthia. Kept me informed through the process and offered assistance if any future needs arise.
Awesome customer service and support John assisted me on everything I needed and took care of everything I needed as far as all my parts and swag if you’re hesitating about purchasing from them, don’t excellent service
Amazing experience! Easy ordering, fast shipping, all parts fit correctly, shift on the fly tunes work flawlessly. I can’t say enough good things about this kit. I was tired of spending money, replacing parts and going into limp mode. Never again! Best money I have ever spent on this vehicle.
Great company and fast response service.
Had a few questions about the tuning before hand they got back right away.
I want to first thank you all who was in involved in answering all my questions on deleting my 2020 RAM 2500, 6.7 Cummins. I believe I have everyone that has helped, thank you to Clark, Anthony and Adrian, your knowledge helped me through my uncomfortableness. If I missed someone, my apologies.
I bought the delete kit on November 2 and by November 6 all parts were in hand. On the tune, the only thing that frustrating me was the removing the pin connectors only to vent my frustrations to sales, sorry. I did find a Security Gate Bypass OBD 2 cable for my year and model for $17.99 on Amazon. Once I received and installed the EZLink guided me the rest of the way. I did get a new tool well two for the shop to include a new battery charger that did the 10A charge for AGM. The tune took 13 minutes to install. However Dark Iron nor the instructions, that I remember, said there would be a check engine light. Luckly I was able to use the EZLink to clear the codes. I also did not realize a trans relearn was needed, I am taking it easy right now until the relaern is complete, don't need a 68FRE to be failing.
The DPF/Muffler delete was straight forward in removing with the exception of the exhaust hangers those are something else but we got them. The shibby kit for the connectors along with some dielectric grease worked great and it did include the DEF tube. I was unaware of it and ordered something to have. The aftermarket straight pipe went on smooth with us have to only cut 17 1/8 inch to put everything together nicely.
The EGR removal, I would have left that one, but Dark Iron had me thinking of exhaust gas possible escaping and the EGR coolant box leaking coolant. Those back two bolts were something else. Again, the shibby connectors worked great along with some dielectric grease. On the coolant return, just like Dark Iron we fought with the o-ring and glad we both an o-ring kit at Tractor Supply when I was getting some washers.
This was a good install but reminded me I am not a spring chicken anymore being 52 years old but blessed that my 18;year old was by my side. I have not towed yet but maybe will install a muffler down the road don’t know yet.
The best experience I had was getting to turn wrenches and spend time with my 18 year old since he is now in college,l something that can never be taking away from me. We are not every day mechanics but was able to fully delete this 2020 RAM 2500
Thank you again for all of your help and the new knowledge I gained,
Chris
Great kit and great service. Everything fits great. Uploading the new tune profiles was super easy. Casey great to work with. Just finish the relearn for the transmission yesterday and couldn’t be more pleased. It’s like having a new truck but without the note. Thanks so much for the great kit, great customer service and always being available
The difference is night and day with this truck now… If you haven’t upgraded your truck then what are you waiting for? Unlock your trucks true power along with getting better fuel mileage…
Tyson was a great help with answering any question. They made sure I had everything I needed. And so far everything is running great.
Thank you
I’ve had my tuner for a couple years and had a few hiccups with my truck. Casey helped connect me with the experts and helped me straighten things out. Thanks Casey!
Great products and good quality kit, easy install and fit perfectly no cutting or fabrication needed. Anthony and the team all responded in quick and timely manner when a question arose or needed more information on the system. I will definitely recommend and will purchase from the Diesel Dudes again. Great company and fantastic customer service.
I cannot begin to tell you how much I appreciate the help from the team at diesel dudes, you guys made my truck like new, i get off of knowledge now, almost six miles per gallon more, when I am towing, i'm back to power that I had when I bought it. To be really truthful, it actually pulls better than when I bought it. I hold a very large horse trailer. Eleven thousand six hundred pounds dry weight, and it pulls it like it isn't even back there. Before I was having to floor my pedal and lug on every hill. I'd like to thank all of you. At diesel dudes, adrian, you have been a great help to me. The whole reason I went with your company is because you actually answered the phone.And I got to talk to a real person. And y'all help me make the best decisions for my truck. Lazy T farms thanks you.
Would like to mention Anthony from the support team for helping me with my issue in my truck was consist with the replies and helpful
Throughout the process of deleting my pickup, Anthony has been very helpful and responsive to my technical questions. Thank you
Customer service was responsive, dealing with Anthony was helpful through some questions.
Great customer service. Very easy place to deal with as well. Shipping times are very decent especially these days and time. Anthony was a very knowledgeable and understanding representative. Respones time was not slow by no means.
Customer service is fast and polite. Very good tunes
Top self parts and service!!! When in doubt or trouble shooting reach out to Casey he’ll get you going!!!