testing & tuning

The roller on our dynamometer is rounded to within 0.00001 of an inch. This degree of precision, paired with our Timken bearing system, eliminates the false torque and speed spikes that can plague other dynos. Our dyno consistently produces valid replicable results, so our expert technicians can tune with pinpoint accuracy.

Improve performance and fuel efficiency

Our custom built dyno monitors your engine’s response to repeated passes that simulate real-road conditions. With each pass, we electronically fine-tune your engine (or adjust the carb, ignition timing, jetting & AFR) until we see an even torque curve with smooth shift points. By the time we’re done, you will realize an overall gain in torque and horsepower and a noticeable improvement in throttle response and driveability right through to the redline! We will also adjust your air-to-fuel ratio to optimize the rate of fuel combustion through each piston stroke. With this optimized combustion, your vehicle will be more fuel efficient than ever!*

*While dyno tuning improves fuel efficiency, many other factors such as tire pressure, driver behaviour, load-weight, etc, have an impact on fuel consumption.

Improve factory settings

The power parameters of new stock vehicles are set for generic driving conditions, decent fuel economy, adequate acceleration, and to meet specific marketing targets. They are rarely optimized for the performance they’re capable of, or for any specific application, or for your unique driving patterns. At International Dyno Authority we custom tune to your specific needs. Whether it’s highway driving, or city driving, or towing a trailer, or more punch and horsepower, our experienced professionals will tune your car, truck, ATV, or bike until it is running at peak performance.


This is one of the most commonly asked and debated questions on forums. Given all the debate on this topic, we cannot give you a definite “yes” or “no” answer.

However, we can tell you this, from our own experience.

  1. Over half of the chassis dyno tunings that we do are on late-model vehicles that are still under warranty.
  2. We have NEVER had a customer come back and tell us they had a warranty issue.
  3. Several Ottawa area dealers have even sent new car owners to us for tuning when they could not meet the customer’s expectations.

We do ALL of our chassis dyno tuning within OEM specs. This helps reduce the risk of any potential warranty issues and it also reduces the risk that you will run into any engine problems as a result of tuning. We’ve had numerous vehicles on our chassis dyno, which had aftermarket tunes installed that were well outside of factory specs. On more than one occasion, we’ve seen these improper tunes cause cracked manifolds, leaking valve cover gaskets, scored cylinder walls, and detonation. Staying within OEM specs does not result in underperformance. There is no need to exceed their specification range. Manufacturers tune new vehicles for generic driving conditions and leave plenty of power on the table for us to find.

“Great people! Makes anyone feel welcome! Thanks!!!”


Excellent service and very knowledgeable! Definitely a return customer here!”


Tuning after Performance upgrades

Just like with ECU tuning, tuning a carbureted vehicle improves responsiveness, power, and fuel efficiency. Tuning is done in much the same manner; however, instead of using a computer to change the parameters, engine components are adjusted and fine-tuned by hand using timing lights, carb gauges, and jetting kits.

If you’ve installed a new air intake system or invested in a high-end carburettor like a Holley or Edelbrock, you won’t tap into their full potential until you have the engine’s AFR and timing adjusted. Make your performance investment pay off by dyno testing and tuning your engine to ensure proper aspiration for the best possible torque and horsepower.

engine Break-in

Break-in is the most critical time in a rebuilt engine’s life. Performing the initial shakedown of your rebuild on the dyno is a great way to ensure future performance and engine life. Because we calibrate the engine load, you can be assured that all the rings will be tightly seated and that your cam lobes will be properly broken-in. And, after doing the break-in, we can proceed directly to tuning for power!

Testing & Tuning Prices

all fees subject to 13% hst

*ECU tuning costs may vary with some makes and models. If applicable, we will notify you when you call or book an appointment online.

more tuning options

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.

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!  

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).

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


★   reviews

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John C Valiquette
If your looking to have your car tuned and Dyno go to International Dyno Authority Great guys Was there this morning and will definitely be going back Unbelievable service Excellent jobread more
Aaron Jacques
Absolutely top notch in every respect. These guys managed to get an additional 200 ftlbs and 175hp out of a naturally aspirated LS3. Can't think of anyone I will be using from now on. Thanks guys!read more
Pascal Julien-Girard
great man,good job,fast service
Philipe Burelle
One of the best Dyno I’ve been to so far thx alot!!!read more
Kyle Berndt
Had a great time. Top class team at the shop. Tuning was on point. Put down some serious numbers!read more
Chris Shea
Shea Brothers Pulling Team would like to thank Marc and Shawn for their help with the Mistress tonight. Lots to learn with the knowledge these guys have. Curtis and I will be back again for sure!read more
Brandon Lamer
Alaster Mckale
Marc and the boys at international Dyno are great. Definitely coming back for more horsepowerread more
Shawn Kelly
Dean Bergeron
Great place. Marc and Brent are great guys. Very knowledgeable. They got my 2V Mustang to 425RWHP so it was more
Tony Lebrun
Great tune on my 2016 f150 running awesome great bunch of guys they gave me what I wanted and more went out of there way to make you feel at home thanks guys highly recommend themread more
Julie Lebrun
Amazing work! My husband is so happy, thank you so much!read more
Joffrey BD
Stephen Gervais
Mark and coworker were great to deal with. Got base numbers on the truck. Also at a very convient time for me! Which made it easy to set up a time and go! Recommend these guys!read more
Sergiy Petrusenko
From our first conversation Mark was very polite and willing to help, he was able to book the appointment quickly and at a time convenient for me and provided excellent service, I couldn't be happier with my experience. Definitely will be back to Marks garage when I do more engine upgrades to my more
Julien Jalbert
Rob Cioffi
Dillan W Vincent
Samantha Valkenborg
Danny Kenny
Brian Barber
Johnathan Smallman
Zachary Clare
Bri Marvin-Miles
Great people! Makes anyone feel welcome! Thanks!!!read more
Nicholas McLean
Derek Pronk
Jamie Kadikoff
جاسم عبدو خلف
Curtis Shea
Mel Smallman
Casey Brown
Evan Johnstone
Pierre Mayer
Ian Clairoux
Great experience and informative at international dyno. Mark and his staff are awesome to hang with... putting my car on the dyno was fu&$@# crazy!!! Thanks a bunchread more
Corey Wert
Marc and the staff were awesome to deal with. They got my car dialed in making a boat liad of torque and hp...highly reccomend this shopread more
Mike Huizenga
Always a pleasure to do business with Marc and watch a truly enthusiastic individual working in his field!read more
Shane Kirby
Collin Laplante
Jonathan Chevrette
Jesse Carr Deslauriers
Just called and was very nice to talk to. Cant wait till there open to try out my new more
Steve Lanqhier
Jonathan Patry
Jonathan Holmes
Excellent service.. and very knowledgeable! Definitely a return customer here!read more
Spencer Holmes
Jeff Storing
Hey bud can't wait to come visit you are a great person and great ideas you will have a lot of fun being successful, not just sayin that to get a picture of my truck in your shop lolread more
Dakota White
Mat McGillivray
Marc Chartrand
Can't wait to see OTTAWA'S OWN Dyno Shop up and IN - ACTIONread more
Barrie Martelle
Finally a real shop in Ottawa that specializes in horse more
Dany Tetrault
Ja Cur
Adam Murray
Great guy who likes to do great things. If it has wheels and makes power Marc is there. Always has a smile on his more
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