Diesel Performance Podcast

Josh McCormack joins Chris Ehmke to kick off our UCC 2025 driver interviews! As the official podcast of the Ultimate Callout Challenge, it's time to get to know the drivers. Josh discusses with Chris what he's looking forward to at this years competition. After taking a year off for family, Josh got the itch to compete again while watching the event last year on the live stream. Will he improve that 2nd place podium finish in 2023? He definitely looks like one of the strong contenders.

First things first, this is Paul Wilson's final episode on the Diesel Performance Podcast. Paul has been hosting this podcast and founded it since it's inception in 2015. Over 2 million downloads and millions of more listens. We can't thank Paul enough for all he's done. Thanks for the 10 years bro, we love you. Our episode today is with Kory Willis of PPEI. Paul and Chris discuss everything Kory knows about what is going on with the EPA and DOJ, how these things have effected his life in diesel tuning, and so much more. Kory is always one of our favorite guests and this episode is an absolute banger. Enjoy!

Paul Wilson and Chris Ehmke get behind the wheel of a 2025 Cummins and let you know how they feel about this 5thish? 6th Gen? Cummins. New turbo ✓ Grid Heater... Out, Glow plugs In External injectors ✓ Side Draft Intake ✓ New 8-speed transmission✓ So how do the boys feel about it? Take a listen!

No more swapping ECMs, no more plugging in unlock cables. EZ Lynk has the goods where all you do is plug into the OBDII and flash your 2017-2023 L5P Duramax, and the custom tunes will flash without needing to do an unlock or ECM swap! Paul and Chris are joined by Tim Mahoney, the lead tuner at Duramaxtuner, to discuss the future of tuning now and what you can expect!

The little intricacies of what a diesel owner needs and utilizes his truck are something you always have to take into consideration when it comes to building mods and tuning. How did that come into factor how the custom tuning of a the underpowered L5D come about? What about building the Stealth STR for these very specific 6500 Duramax trucks? Well, Nick gives you the minutia of detail right here!

Paul Wilson and Chris Ehmke take you on a ride with a truck that dwarfs our L5P. The boys get behind the wheel of a 6500HD L5D Duramax that is massive. These trucks leave the factory with a lot of power to be desired and that's where DuramaxTuner stepped in with custom tuning and a Stealth STR Turbo. The results? Well let the boys tell you in detail!

Paul sits down with Jeremy Garnett, technician at Duramax / Calibrated Power, to talk about big blocks, L5Ds, why the LML is the worst to wrench on, and what he tries to show online for others that don't get under the hood of as many trucks as he does. Paul closes out the show with a diesel insights regarding blowing up an engine dyno. Anything you want to hear talked about? Let us know!

The boys are back! First episode up.... 2024 L5P tuning?? Oh yes. Paul Wilson and Chris Ehmke are joined by Jacob White of Edge Products to discuss just that, 2024 L5P tuning. They have all the new info right here and discuss much more such as how custom tuning is expanding on the Edge CTS 3(+), they discuss the complexities of unlocking the new ECMS and TCMs, and discuss what other makes are on the horizon for Edge's plans(Powerstroke, Cummins guys pay attention). Enjoy this episode and get ready for many more!

Paul Wilson and Chris Ehmke are joined by Jake and Spencer of FASS EGR Solutions, which is its own entity of the FASS Fuel family. We are big fans of all their products and in this episode, they detail all the interesting products, developments, and the future of EGR solutions! This episode was recorded in late 2024 and we had some technical difficulties, but we are happy to share this with you now. Enjoy.

The title says it all! Jacob White of Edge Products joins Paul Wilson and Chris Ehmke to discuss the newest Edge feature, flashing custom L5P tuning with the Edge device. They discuss the process it took to get here, Duramaxtuner working with Edge to launch the custom L5P tuning, and what the future holds for other RPOs and Makes with Edge!

Paul Wilson is joined by Robert Rowley! You probably have seen at least one of his videos on (TheBuiltCmax.Creations) Instagram or TikTok and we got a chance to chat about all the amazing things he's doing within the diesel world. Robert chats about 10K budget build projects, the spirit of competitions that are made for modified trucks that are streetable, destroying driveshafts on street drives, and the Poor Diesel Challenge. Thanks for taking the time to talk with us, Robert!

Chris Ehmke is joined by Nick Priegnitz of Calibrated Power, home of Duramaxtuner and Jason Wherli of WCFab to discuss innovation in diesel aftermarket products. The boys discuss how much it's changed, what the future holds, and discuss the Performance Test Lab they created.

Ben Hinz of Southern Diesel Supply joins Paul Wilson and Chris Ehmke in the studio this week. Ben has been building his company Southern Diesel Supply for some time now and the boys wanted to have him on to discuss what it's like owning a diesel business out in Florida. They discuss his diesel roots, the hardest aspects of owning a business in the diesel industry, and much more. Thanks for the great interview, Ben!

Kenny Bruner. You know the man, we literally had him as our competitor interview just a bit ago. Well, he showed up to the Ultimate Callout Challenge and took home 1st place. Ken talks the weekend win with Paul and Chris on this episode! Congrats Ken Bruner on winning the UCC 2024, buddy.

The boys are joined by Kenny Bruner to discuss his second attempt at the Ultimate Callout Challenge! Kenny brings his 2006 Cummins and hopes to put in a solid performance over the weekend. Kenny does it all; family man, an engineer, and a fabricator. The man does it all. Ken is a great guy and of course we had a blast interviewing him. Talk a listen....

Paul Wilson is joined by rookie UCC 2024 competitor Morey Logue! Finally the boys got ahold of someone that isn't using a Cummins in the Ultimate Callout Challenge 2024. Morey was gracious enough to take time away from wrenching on his Dmax to discuss all he's done to the truck, what he expects accomplish this year at the event, and what working with the Dirty Hooker Diesel boys is like. Yes you read that correctly, Morey is apart of the DHD crew which means you know this interview was a blast.

Logan Epling joins the guys for this next driver interview featuring UCC 2024 competitors! Logan talks about juggling shop life, the UCC, and his last time competing. His 2006 Cummins hopefully has the electrical gremlins solved and with his experience in drag racing, the dyno, and sled pulling he's expecting a lot more this year. Check it out!

Chris Patterson called in to talk with Paul and Chris about what he wants to see from his truck at the Ultimate Callout Challenge 2024. From settings records on dynos, competing in multiple events over quite a few years, and putting his Cummins through anything and everything; Chris is back for another go round at the UCC! With his 2007 Cummins, Chris' competition history is one of perseverance and he's looking to get to the top of the standing board from last year's top-five finish. We always enjoy having Chris on and this interview was no different.

Paul Wilson and Chris Ehmke are joined by Michael Brown for our first UCC 2024 competitor interview of the season! Mike was such a fun interview. He enters his first UCC competition with his 2007 Cummins Megacab with a slew of mods. The boys and Mike sat down to discuss strategy, what he expects of the competition, and had quite a few laughs as Mike is quite a fun guy to chat with. Can't wait to see how you handle the Ultimate Callout Challenge in your rookie season, Mike!

Paul Wilson is joined by Chris Searle to discuss UCC 2024! Chris discusses all the amazing things you'll get to experience at this year's event. Outside of the competition that has a laundry list worth of amazing competitors, this year you can find a fan dyno, the show and shine is back, epic pull pits, ODSS races, and of course the DPI Expo showcasing the industry's best vendors. It's going to be a great event, be sure to get down to Lucas Oil Indianapolis Raceway Park May 31- June 2 to experience this!