Each summer, the small city of Jerome, Idaho, transforms into the diesel performance capital of the Northwest. Thanks to Lyle and Sadi Richmond, owners of Daily Driven Performance, their Dyno Days event has become one of the largest and most anticipated diesel events in the state. What began as a grassroots gathering has evolved into a full-blown takeover of downtown Jerome, shutting down multiple city blocks and drawing enthusiasts from across the region. Along with Lyle and Sadi, the hard work of Jason Capps at Idaho Diesel Adventures has been an essential part of this event and key to getting, and keeping the city of Jerome on-board. The 2025 edition proved to be the biggest and wildest yet.

Daily Driven Diesel Dyno Day Takes Over Main Street

Part of the down-home charm and fun of this event is its setting. Instead of being tucked away at a track or shop lot, the event takes place right in the heart of Jerome. Organizers close off streets, fill the city parks with more than 70 rigs for the Show-N-Shine, and drop the mobile Northwest Dyno Circuit dyno right in the middle of Main Street. With food trucks, vendor booths, and families crowding the sidewalks, the vibe is more festival than competition—except the horsepower numbers are deadly serious.

This year saw a huge turnout with 91 trucks strapped to the rollers, making pulls throughout the day while spectators packed in shoulder-to-shoulder. The air was thick with the sound of screaming turbos, black smoke, and cheering crowds as competitors pushed their setups to the limit.

Dyno Day Records, Wins, and Heartbreaks

The highlight of Dyno Days is always the Unlimited Class, and 2025 delivered some jaw-dropping numbers. Spencer Schulte of Darkside Diesel took the crown with an earth-shaking 2,900 horsepower from his Cummins-powered Ram. Their blood, sweat, and tears were poured into the build and left no doubt about Darkside’s dominance on the rollers.

But perhaps the most dramatic moment came when Jake Rodriguez chased history. On his way toward the elusive 3,000 horsepower mark, his truck was already well into the mid-2,000s before disaster struck. A violent boom silenced the crowd and left pieces of hardware scattered, cutting his run short in heartbreaking explosive fashion. While the carnage ended his day, the attempt itself became one of the most talked-about moments of the weekend.

Beyond the dyno, Trevor Angle delivered pure entertainment by winning the burnout contest behind the wheel of a short-bed 6.0-liter-powered Ford Super Duty. Clouds of tire smoke rolled through downtown as the crowd erupted—reminding everyone that Dyno Days isn’t just about numbers, but also about showmanship.

Show-N-Shine and Community Vibes

While the dyno draws the spotlight, the Show-N-Shine brought out rigs of every style—from spotless show builds to lifted workhorses polished to perfection. Rows of trucks lined the park, each reflecting the pride and passion of their owners.

The Richmonds’ vision of their event has always been about more than just competition. It’s a celebration of diesel culture, community, and the friendships that grow around shared passion. By taking over downtown Jerome instead of hiding away in an industrial corner, they’ve created an event that feels as much like a hometown block party as it does a horsepower war.

Looking Ahead

As the sun set on Dyno Days 2025, the Richmonds could look back on another milestone year. With nearly 100 trucks on the rollers, record-breaking horsepower, and hundreds of spectators, the event has cemented itself as Idaho’s premier diesel festival.

With the event growing bigger each year, one thing is certain: Daily Driven Dyno Days will continue to raise the bar for diesel gatherings in the Northwest. For now, Jerome goes back to its everyday rhythm. But for one weekend each summer, thanks to Lyle and Sadi Richmond, it becomes the loudest, smokiest, and most powerful small town in Idaho.