Chris Ehmke is joined by Nick Priegnitz, of Duramaxtuner, to discuss in detail the evolution of engine control modules and how tuning has progressed over the years!

Nick breaks down the history of GM's Duramax ECM platforms, walking through key model year ranges,from early LB7 and LLY trucks to LBZ, LMM, LML, and the latest L5P platforms, and explains how hardware changes, operating systems, emissions systems, and security updates shaped the tuning landscape.

They also discuss the major ECM milestones that changed the diesel performance industry, how emissions regulations impacted tuning development, differences in tuning strategy, and where ECM technology and diesel calibration are headed next

Professor Nick utilizes his almost 20 years of diesel tuning knowledge to give us an episode with immense amounts of knowledge. Enjoy!

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 are joined by Lavon Miller to discuss what he's been up to, but really they had to get the scoop on what's up with the Seventy2fast race going on this year down in Indy during UCC weekend. The amount of interesting aspects and the amount of money that is on the table for the competitors is mind boggling. The Seventy2fast has $500 callouts, where racers can target a specific driver to beat after putting down their money and the target matching, winner of a head-to-head race takes the money. Contigencies for Powerstroke and Duramax, Powerstrokes can win an extra $11k if they take home 1st place and Duramax drivers can earn an extra grand per round if they beat a Cummins or Powerstroke and an extra $3,000 to a winner racing a Duramax. $70k goes to the winner! Lavon walks us through everything about this race and we have to be honest, we haven't been this excited for an event in a while. Check out the event by visiting www.seventy2fast.com or following Lavon Miller's social media channels. Take a listen!

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!

The Diesel Performance Podcast is back! Chris Ehmke and Anthony Bruneni have resurrected the show and we have plans that will make our fellow diesel enthusiasts excited for what the future holds. Interviews, horsepower recipes, diesel events, competitions. Get ready! First off, we reintroduce ourselves with what has been happening around the industry with tuning (specifically the 2024+ L5P, 2023+ Powerstrokes, and the 3.0L Duramax). The boys also discuss what 2027 is looking like in regards to change for diesel truck makers. We are stoked to be back! If you have anything you want us to cover or discuss, leave a comment, message our podcast Facebook page, or reach out to any of us. We look forward to a new chapter of the Diesel Performance Podcast!

Chris Ehmke and Tim Mahoney are joined by someone you have heard a few times on this show, Josh McCormack! Josh fresh off his UCC win earlier this spring decided he was done with wowing the masses and put down a new record on the dyno. 4,157 HORSEPOWER. Insanity. He walks the boys through how he accomplished it and what you can expect to see out of him in the future.

Chris Ehmke is joined by the lead tuner at Calibrated Power, Tim Mahoney, to discuss how the 2020+ Powerstroke 6.7 liter world is about to change. They discuss what this means for your 2020+ 6.7L, the ease at which tuning for the end user will be, and how adding 100+ HP is going to feel a lot different in these newer Powerstroke trucks.

Show favorite, Chris Patterson, owner of Unrivaled Diesel, took second at the Ultimate Callout Challenge 2025! He sits to talk with host Chris Ehmke to discuss how grueling and how much it takes out of the competitors and their teams. The whole thing is about survival. Chris is a survivor, he put down a screaming 5.54 at the drags, 2,300 horsepower on the dyno, and 318 feet in the sled pull. He gives us all the details on this episode!

Josh McCormack has won the Ultimate Callout Challenge 2025! He joins Chris to discuss the weekend. Family man, YouTuber, and an overall great guy. Josh lef it all out there and came back with first place. He breaks down the weekend, his big 3,100+ horsepower dyno run, racing, and his Sunday at the pull. Congrats on the win, Josh!

Follow him on Instagram & TikTok: @justacommonrail24v YouTube: Horsetorques Diesel

You have to see Patrick Brown's Cummins he is bringing to his first run at the UCC event. Chris sat down and talked with him about what he expects to see it do. Patrick is no stranger to competitions with having his eyes one time set on the Diesel Power Challenge nd having competed at King Of The Streets, he's ready to throw down at the UCC. Humble, determined, and doing wild things with such a cool Cummins, we are stoked to see what Patrick accomplishes this weekend!