International dyno authority logo. speedometer surrounded by flames.


2535 Blackwell Street, Unit 108, Ottawa, Ontario (613) 795‑2779

At International Dyno Authority we are strictly a Dyno Testing and Performance Tuning shop. Dyno testing and custom tuning is our only business – not a side business. We custom built our chassis and engine dynamometers to exacting specifications so that we can deliver the best dyno testing and tuning in the industry.

Our technicians are expert professionals who have decades of experience and will guide you step-by-step through the dyno testing and tuning process. We pride ourselves on our friendly and welcoming service, and we’re always happy to answer any questions. Whether you’re a complete newbie or an experienced gearhead, we would love to meet you and help you achieve your performance goals.

Dyno Testing & Tuning

Our chassis and engine dynos were custom built to provide valid and reliable test results so our technicians can tune your vehicle with pinpoint accuracy.


We adjust the cam timing to improve low-end torque for a smooth power curve right to the red line. Ignition timing is adjusted to deliver optimal combustion timing for maximum power and fuel efficiency.

Electronic Control Unit

By connecting to your vehicle’s electronic control unit, we can monitor your engine’s response to repeated passes on the dyno. With each pass, we fine-tune your engine until it has a smooth torque curve for a more responsive ride, smoother acceleration and increased power.


We adjust ignition timing and AFR with carb gauges, timing lights, and jetting kits, a necessity after installing any performance parts related to the vehicle’s aspiration system.

Yellow Corvette

Air-Fuel Ratio

Adjusting the AFR of your engine ensures the correct amount of air and fuel are used for complete combustion. AFR is critical to providing power, fuel efficiency, and extending the life of your engine.


Superchargers and turbochargers improve performance by delivering more air to the engine, but with increased airflow, the amount of fuel injected into the combustion chambers must be adjusted.


While tuning the engine on the dyno, we measure the changes to Manifold Air Temperature, Manifold Air Pressure, and Exhaust Gas Temperature to determine if the engine's combustion chambers are receiving the correct mixture of air and fuel, and that ignition is occurring with optimal timing.

“Marc and the staff were awesome to deal with. They got my car dialed-in and made a boat load of torque and hp. Highly recommend this shop!”


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dyno testing & tuning services

Tire on red car spinning on the dyno

Chassis dyno tuning

Our chassis dynamometer was custom-built with the best components available. It's designed to consistently produce valid and reliable results so our expert technicians can custom tune your vehicle with pinpoint accuracy.

Land Rover engine. Straight on view

engine dyno tuning

Restoring or building an engine for your project can cost thousands of dollars. Dyno testing and tuning your engine before installation ensures that it will run and perform to perfection the first time you turn the key!

Black Porche 600 speeding down highway

custom tunes

We offer our own dyno built tunes on Aliengate or SCT programmers. We can provide a tune for your specific need, whether for towing, racing, improved mileage or for your daily driver. Easy to order and install (free shipping).

White delivery van driving down the highway

fleet tuning

Fleet vehicles tend to operate within defined geographical limits. When an engine is properly tuned to the road conditions and driving style you'll have fewer repair costs and realize a minimum 10% improvement in fuel efficiency!


  • mon - wed: 7:00 am - 6:00 pm
  • thur - fri: 7:00 am - 9:00 pm
  • sat: 7:00 am -11:00 pm
  • sun: 10:00 am - 2:00 pm
  • sun after 2:00 pm by appt.


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2535 blackwell street,unit 108, ottawa, ontario

marc chartrand


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