DPF diagnostics, repair support, and tuning services for on-road heavy-duty trucks. Built around uptime, fuel efficiency, and dependable real-world performance.
Modern aftertreatment and emission systems are critical to keeping trucks compliant and operating properly. When they fail or do not function the way they should, productivity drops fast. Frequent regens, derates, warning lights, and reduced power cost time and money and can take trucks off the road completely if not handled properly.
At TOP GUN HD, we provide professional DPF system support and responsible tuning services focused on reliability, drivability, and long-term fleet performance. Our approach is grounded in diagnostics, practical solutions, and helping Alberta trucks operate the way they are meant to.
Professional DPF service and tuning support that helps reduce downtime, improve performance, and keep your trucks moving.
We work with Alberta fleets and operators who need help with:
Check engine and dashboard warnings
Aftertreatment or DPF fault codes
Derates and limp mode situations
Loss of power or poor drivability
Frequent or forced regens
Increased fuel consumption
DPF Diagnostics
Expert Tuning
Our team uses advanced diagnostics to correctly identify the issue instead of guessing, then supports you with the right solution so your truck can get back to doing its job.
Modern DPF and emission systems are complex. If problems are not diagnosed properly, costs climb fast and downtime becomes unpredictable. We take a structured, professional approach.
Services include:
Our goal is to help fleets reduce nuisance failures, unexpected downtime, and costly disruptions caused by aftertreatment problems.
Tuning should support how the truck actually works, not just what sounds impressive on paper. Our tuning philosophy is simple. Improve drivability. Support efficiency. Respect reliability. Help owners and fleets get predictable performance across their routes and workloads.
Where appropriate, tuning can help support:
Every calibration recommendation is made with practicality in mind, not hype.
Our diagnostics and support can be handled through our on-road mobile service. More involved work is recommended to be completed in our shop when full facilities are required. This flexibility matters in Alberta where trucking units often work in remote locations, active job sites, and northern operating environments.
Call us today and let’s get your units diagnosed, corrected, and back to work.
TOP GUN HD is trusted by Alberta operators because we focus on what matters. Good diagnostics. Honest communication. Practical solutions. Professional workmanship. We do not oversell. We help you make smart, informed decisions that support long-term reliability.
Albertan’s face conditions most regions do not. Long idling. Cold weather. Heavy loads. Remote hauls. Oilfield traffic. Stop and go industrial work. These environments can be hard on aftertreatment systems. We work with fleets and operators in:
Mining
Oil & Gas
Drilling
Civil Earth Works
Pipeline Construction
Forestry & Agriculture
Transportation & Logistics
If you rely on your trucks every day, we understand what is at stake.
Dependable DPF services and tuning support you can trust.
Yes. We use advanced diagnostic software to identify problems accurately instead of guessing.
Yes. Our DPF and tuning services are focused on heavy-duty road-going trucks and vocational units.
When done correctly and appropriately for the application, tuning can support better drivability, efficiency, and predictable performance.
Yes, depending on what is required. More advanced work may require shop service.
Yes. We work closely with fleets, owner-operators, and industrial operators across Alberta.
500+ Happy Clients
100% Satisfaction
Jack M.
Fleet Manager
TOP GUN HD responds quickly, diagnoses problems accurately, and delivers solid heavy-duty repairs. They understand how important uptime is to our operation.
Billy D.
Mining Superindendant
Professional, reliable, and safety-focused. We trust TOP GUN HD with our heavy-duty fleets on and off the road.
Why Choose Us?
Our Services
24/7 Emergency Service
If your truck or fleet is dealing with aftertreatment issues, regens, derates, or drivability concerns, contact TOP GUN HD. Tell us about your unit, application, and problem. We will help you take the right next step.
We go wherever the roads go
TOP GUN HD meets and exceeds industry safety and compliance standards to support heavy-duty industrial, commercial, and fleet operations across Alberta.
