Tuning Warranty
The calibration work we deliver is backed by a tuning warranty for the period stated in your service confirmation. The principle is simple: we cover the work we control. If calibration-related issues arise during the warranty period, we make them right.
What The Warranty Covers
- Calibration parameters not loading or saving correctly to the ECM during programming
- Calibration scope not producing the operational outcome agreed during the quote conversation
- Calibration-related fault codes appearing after delivery that weren't present before our work
- ECM lockout or boot failure resulting from our calibration process
- Calibration drift or corruption that develops during normal operation within the warranty period
What's Excluded
- Hardware failures of the ECM, sensors, injectors, turbo, EGR cooler, DPF, or any other physical component
- Damage to the ECM from electrical faults in your truck (alternator overvoltage, battery acid contamination, harness shorts)
- Damage from third-party labor — ECM removal/reinstall errors, missed connectors, reversed harness routing, shop-floor mishandling
- Operational damages arising from use of the calibrated equipment — engine damage, drivetrain damage, accident damage
- Regulatory enforcement actions arising from your use of the calibrated equipment in violation of applicable laws
- Reflashes required because of duty cycle changes after delivery (e.g., truck moved from highway to vocational service)
- Updates required for compatibility with subsequent OEM software releases
Warranty Period
The warranty period for your specific service is stated in the service confirmation we send when the work is committed. Periods vary by service type and scope. Standard ship-in calibration carries a baseline warranty; fleet relationships often carry custom warranty terms negotiated as part of the relationship structure; dealer program work has its own warranty framework.
If you don't have your service confirmation handy, the work order number alone is enough — we have the warranty terms on file. Call us or open a service ticket and reference the work order number; we'll confirm the warranty period and what's covered for your specific situation.
The Calibration vs Hardware Distinction
This is the most important boundary to understand. The warranty covers calibration work. It does not cover hardware. If a sensor fails, an injector goes bad, a turbo wastegate sticks, an EGR cooler develops an internal leak, a DPF gets clogged with ash — those are hardware failures, not calibration failures. The warranty doesn't cover them even if they manifest during the warranty period and even if they trigger fault codes that look calibration-related on the surface.
The diagnostic conversation on a warranty ticket usually clarifies which side the issue falls on. Sometimes it's clearly calibration — the symptoms match patterns we've seen across customer cases on the same platform, the resolution is a parameter adjustment, the reflash holds. Sometimes it's clearly hardware — the symptoms are consistent with a known component failure mode, the calibration parameters check out fine, the resolution requires component replacement. Sometimes the boundary is unclear and we work through it together.
When the boundary is unclear, we err toward making it right. We're not trying to use the calibration-vs-hardware line as a way to avoid honest work. If a calibration adjustment will resolve an issue and you're within the warranty period, we'll reflash whether the underlying cause is technically "calibration" or technically "hardware adapting to calibration assumptions."
Duty Cycle Changes After Delivery
One specific exclusion deserves a separate note: changes to your operational duty cycle after delivery. The calibration scope we deliver is built around the duty cycle you described during the quote conversation. If that duty cycle changes substantially — the truck moves from highway service to vocational service, from regional delivery to long-haul, from a 4-hour idle profile to a 12-hour idle profile — the original calibration may no longer be the right fit.
Reflashing for a duty cycle change isn't a warranty event. It's a new calibration scope that reflects the new operational reality. We can do the work; it's billed at the standard rate. The conversation usually starts with you telling us the duty cycle changed, and we work through what calibration scope fits the new reality.
For fleet customers operating multiple duty cycles across the fleet, we structure calibration scopes around the actual operational mix. Pre-emptively having that conversation during the quote saves duty-cycle-change reflash work later.
Third-Party Labor And Hardware Service
If your truck has been to a dealer, an independent shop, or a fleet maintenance facility for hardware service after our calibration work, tell us during the warranty ticket. Third-party labor can introduce its own issues — missed connectors, reversed harness routing, sensor swaps with wrong part numbers, ECM reflash from dealer software that overwrites our calibration. These aren't warranty-covered, but they're diagnostic information that helps us identify what's actually going on.
Specifically: if a dealer has reflashed the ECM with stock OEM software after our delivery, our calibration is gone. The truck is now running stock calibration, which means stock calibration patterns. We can reflash with our calibration again; that work is billed at the standard rate unless we agree it's warranty-covered based on the specifics.
Making A Warranty Claim
Open a service ticket at /support/create-ticket/ with the following:
- Work order number from your service confirmation
- Current fault codes if you have them (scan tool output or photo of dash)
- Description of what's happening — when it started, what changed since delivery, what operational context applies
- Recent service history — anything done to the truck since our work, particularly anything that touched the ECM, the harness, or major components
- Photos, diagnostic exports, or other supporting documentation if available
Same-day response during business hours. For urgent operational situations, call directly at (888) 768-2447. The diagnostic conversation usually narrows the issue within one or two exchanges — most patterns are familiar enough that the resolution path becomes clear quickly.
Related Pages
Warranty Issue On Your Truck?
Open a ticket or call us directly. Same-day response during business hours. Most warranty conversations move quickly once we have the work order and current fault codes.