Diesel Performance Podcast

The boys got their hands on one of WCFab's employees(shout out Sergio!) 2024+ L5P that's got quite a bit of goodies on it. We took the truck out and recorded the podcast in real time while testing her oout. What exactly does this 2024+ L5P have going on with it? Here's the list: Stealth Mach 2 Turbo Duramaxtuner ECM Engine & TCM tuning WCFAB STAGE 2 High Flow Bundle and Down Pipe WCFAB Y-Bridge WCFAB Intake Horn WCFAB Coolant Tanks WCFAB Coolant Pipe WCFAB Rear Diff Cover WCFAB Splash Shield WCFAB Traction Bars WCFAB Fuel Filter Housing WCFAB 3/4 Inch Bumper Spacers Fox Shocks Cognito 3 Inch Leveling Kit Axe 22-Inch Wheels on 35s Sergio went all out and the truck looks and drove amazing. Now take a listen to hear what Chris and Anthony had to say!

We often get a ton of questions regarding what we would do with necessary upgrades for the LML Duramax. We figured we'd bring in one of the Calibrated Power Shop Techs, Nick Evertsen, to answer that question. Nick has been a GM tech and moved around to independent diesel shops to arriving over at Calibrated Power now. He is taking his decades plus amount of expertise to answer the question, 'Top five reliability upgrades for the 2011-2016 6.6L Duramax.' These trucks are now between 10 and 15 years old(insane to think), and we have the best upgrades that will keep your LML running optimally and for the long haul. Enjoy!

We are joined by the Lucero brothers! Shop owners, massive racing fans, and now first time AMSOIL UCC competitors. We are big fans of these guys and we believe they can make huge waves at the event in a rookie season. They discuss the Cummins they're bringing, what they expect to see out of the competition field, and how they are going to attack the event. We are ready to see what they do!

We are interviewing our first rookie of this years event, Jonny Hooper! Jonny is ready to put his 12 Valve Cummins into the competition and make some waves. Coming from a background in sled pulls and dirt drags up in Wisconsin, he is hooked to the experience of competition. Jonny is looking to have fun and achieve his own goals at this years AMSOIL UCC 2026. As avid 12 valve fans, we are going to have fun watching Jonny take on this years competitors!

Cody Hawk! If you are into Duramax trucks, you know the name. He's Setting records of over 3,000 horsepower in a Duramax. Cody has switched up the mods on the LB7 this time around. He's got a secret up his sleeve being announced in a video on his social channels coming soon. What exactly? We are patiently awaiting to see as well. We are ready to see what she does for you this year at the 2026 AMSOIL UCC, Cody!

He's back! The back-to-back two-time AMSOiL UCC champion is returning to reclaim the title he last won four years ago. Justin has been racing Pro Street and racking up wins in the race circuit since his last time competing at the AMSOIL UCC. Has the competition changed drascitaclly since 2022? Will he be able to get the truck ready for the sled pull portion? Justin talked to us about a ton of things and how he sees his experience going at the 2026 event. Get ready, we are stoked to see what Justin Zeigler accomkplishes this go round!

The podcast has the man that brings the whole diesel industry together for an amazing weekend of chaotic fun, Chris Searle! The AMSOIL Ultimate Callout Challenge is back for it's TENTH year. Wow. That means get ready because the event is going MASSIVE for it's year 10. Chris Ehmke talks with Chris Searle to discuss how the AMSOIL UCC went from it's inception of an event to squash talk talking and put their money where their mouth is.... in the most fun and friendly way possible, to one of the biggest diesel events in the industry. We discuss all that is going down at the event in 2026! Fan dynos, a massive Show N Shine, a joint points event with the ODSS & NHRDA, a 1st Gen Homecoming with 200 1st Gen Cummins driving to the event for spectators of drool over, and don't forget Lavon Miller of Firepunks Fast72 event is happening too! This is just the tip of the iceberg, so sit back and relax while Chris Searle dishes everything happening at the AMSOIL Ultimate Callout Challenge 2026! Looking for tickets to the event? Click the link below! https://ultimatecalloutchallenge.com/Tickets

Kory Willis is back! He joins the show to discuss everything emissions and diesel. You've seen all the news surrounding DEF and charges for deletes. Kory called in to discuss his experience fightiong his battle to keep his company PPEI alive despite the massive blows it faced with charges. Kory also discusses what we can expect to see from here, emergency vehicles dealing with reduced power mode in times of crisis, and much more! Thanks for carving out some time for the show, Kory. Listeners, this one is a good one. Enjoy!

Anthony Bruneni and Chris Ehmke are joined by CPS transmission builder, Jared Ewert. He is here to discuss the 10-Speed "Allison." How does the GM 10L1000 stack up to its fraternal twin, the 10-Speed Powerstroke transmission? What are the common issues with the 10-speed equipped Duramax? How are we looking at beefing up the 10L1000 transmission? The boys cover it all and more right here!

We love diesel. Not just medium duty trucks, that's why we brought in Ben Evers of Farm Focused and Calibrated Power to discuss Spring planting and custom tuning for ag equipment! Ben breaks down how tight planting windows, long days, and heavy workloads push tractors and equipment to their limits, and where factory calibrations often leave performance on the table. We get into how custom tuning can improve throttle response, usable power, and fuel efficiency, helping farmers cover more ground without adding unnecessary stress to their machines. We also touch on some of the misconceptions around tuning in the agriculture space, how it differs from the diesel truck world, and why more farmers are starting to look at performance solutions as a tool, not a risk. If you've ever wondered how diesel performance translates outside of pickups and into the field, this episode gives you a real-world look at how tuning is helping keep farms running efficiently when it matters most.

Chris Ehmke and Anthony Bruneni are back to touch on a subject we got quite a few listeners asking us for, 2017+ L5P Duramax horsepower recipes! The boys break down what the ultimate towing recipe is for this Duramax. Then they tackle what they think is the best daily driver recipe. Followed by going big on a build for this RPO and what you should look out for when pushing your newer Duramax truck. Got any interviews or suggestions for the podcast? Hit us up on our Facebook page, Diesel Performance Podcast!

We got a bonus episode! Anthony Bruneni and Chris Ehmke are joined by Charlie Fish of KC Turbos. He called in to discuss a new diesel class he created for this weekend February 26-28th, The Average Joe Blue Collar 2WD No Prep Diesel Truck Class. Why did he create this race? The spirit of racing isn't how much money you throw at a truck, it's about the passion. Charlie breaks down the rules, what drivers and spectators can expect, and what this class means to the diesel industry. Oh, we forgot to mention that $20k goes to the winner! Want to go to the race? Buy tickets by Clicking here Want to learn more about the race? Click Here

Anthony Bruneni and Chris Ehmke have on our resident engineer / engine dyno / data man / destroyer of turbos guy Dan Timmer! Dan sits down to discuss what it actually takes to get the engine dynos running, the tyoes of testing he conducts, the occasional fire and explosion and more. We've now utilized 6.7L Cummins engine; LBZ, L5P, and 3.0L Duramax engines, and soon a Powerstroke 6.7L engine. If you like data or carnage, you will love this episode! If you have any ideas for episodes for the future or would like a certain guest on, please let us know on our Facebook page or message us or drop a comment!