Performance Tuning:
Up to 30% More Power
The short answer: Performance Tuning is a software recalibration of the ECM that unlocks up to 30% more power and improves low-end torque, without replacing parts. The engine pulls harder, sooner, and picks up more decisively.
A bonus fleet managers appreciate: in 75% of cases, a Performance calibration also improves fuel consumption. Better combustion produces more useful work with the same amount of diesel.
All Diesel Spec Performance calibrations are designed and validated on a dynamometer in La Prairie, Québec, within the engine’s safety margins.
Real gains
on the road
On Canada’s hilly roads, a truck that holds its own on the climbs means time saved and less fatigue behind the wheel.
When software reaches its limits, our Big Boss® turbos and manifolds take over. Talk to an expert about it.
30-day money-back guarantee. Results measured on a dynamometer.
Power and torque
- Up to 30% more engine power depending on the model
- Improved low-end torque: the engine pulls in the useful RPM range
- More direct, more predictable throttle response
- Fewer downshifts on climbs under load
Built for heavy loads
- Calibration matched to the real weight you pull, not a factory average
- Ideal for specialized transport, logging, bulk hauling and road trains
- Compatible with Big Boss® performance parts for extreme configurations
- Fuel savings as a bonus in 75% of cases
Supported brands and engines
for Performance Tuning
Performance Tuning is offered on six of the six supported brands (MaxxForce is offered Off-Highway only):
- Caterpillar: 3406E, C7, C9, C10, C11, C12, C13, C15, C16
- Cummins: ISB, ISC, ISL, ISM, ISX, QS Series
- Detroit Diesel: DDEC 3 to DDEC 13 and DD13, DD15, DD16
- Mercedes: MBE900, MBE4000
- Paccar: PX-6, PX-8
On-road performance or competition
two separate worlds
It’s the right choice for a registered truck that works on the road.
For competition and off-road use, see our Off-Highway Tuning page, governed by a strict legal disclaimer.
On-road Performance Tuning (this page)
- 100% software, no emissions equipment removed
- Compliant for on-road use in Canada
- Up to 30% more power, improved torque
Competition and Off-Highway (separate service)
- High-RPM, high-performance calibrations for racing (drag racing, truck pulls)
- Emissions equipment removal possible
- Restricted to non-registered vehicles, closed-course use only
Frequently asked questions
How much more power can you expect from Performance Tuning?
Does Performance Tuning increase fuel consumption?
Is Performance Tuning safe for the engine?
Can you combine Performance Tuning with Big Boss® parts?
How much does this service cost at Diesel Spec?
Is there a warranty on Diesel Spec tunes?
Where can you get your truck tuned?
Talk to a Diesel Spec expert
Personalized quote for your truck or fleet, answer within 24 hours. 30-day money-back guarantee.
Talk to a DSI expert
Documentation, a call back from an advisor, a quote for your truck or fleet. An expert will contact you within 24 hours.