Diesel Performance Podcast

Chris has Mike Brown on this episode! Mike has ditched the mega cab in favor of a leaner regular cab, will it push him to the top? Mike left last year's UCC finishing third in his inaugural run at the competition. New Cummins, big win? We are excited to find out. Thanks for joining the show, Mike!

Chris is joined by Colt Carter to discuss how the hell he went from rookie at the start of UCC 2024 to grabbing a 2nd-place finish. Colt is a gamer, and it's going to be fun to watch what his Cummins will do at the event this year. Another podium finish? One spot higher and grab the win? He's got what it takes. Be sure to check out Colt's shop as well, Black Magic Performance.

Chris Patterson is back! The green Cummins from Texas that has thrown down 3,000 horsepower multiple times is ready for his final run at the UCC. Chris is a true competitor. He's taken first in the dyno portion of UCC, first in sled pulling, and as high as 2nd in the drag races. Will this be his year to finish atop the pack? He's got a damn good chance. Thanks for chatting with us Chris, we appreciate you.

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!