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!”


Google Rating

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!

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 - fri: 10:00 am - 8:00 pm



privacy policy


2535 blackwell street,unit 108, ottawa, ontario

marc chartrand


★   reviews

19:30 06 May 18
Awesome guy running the place, smart, knows what he's doing, professional. Awesome fun
Dan Makela
19:36 16 Jun 17
The only place around where you can get this kind of service. Marc is a truly knowledgeable and passionate guy. Highly recommended
Logan Andrew
22:02 23 Jan 18
Kari Brew
11:23 08 May 17
Collin Laplante
15:45 30 Apr 17
Andreas Tanzer
16:55 18 May 18
Hakan Egitman
15:34 12 Jun 18
Very friendly staff and the owner is an expert!
00:33 10 Jul 18
Aaron Jacques
01:32 03 Aug 18
Top notch crew and shop! They know their stuff and know how to get every last bit of power and torque out of engines. Awesome all around experience...highly recommend and they will be my "go-to" shop from now on.
dogu Tuna
17:18 14 Aug 18
613/819 Streetoutlaws
22:01 28 Oct 18
Great place. Very knowledgeable guys!
Nick Rowan
03:10 27 Dec 18
Friendly staff and great service
Lana Berndt
22:58 13 Jan 19
Well organized. Well equipped..customer service A1
Turbo Parts Canada Inc.
23:22 04 Feb 19
Marc is great to work with. Drove right off a Dynojet to his and made same hp.
Robert West
18:42 03 Apr 19
I got my Chevy 355 dyno tuned here. Marc is very knowledable and patient, if you're looking for a place to get a dyno done in the Ottawa area stop looking. You've found the best one.
22:01 03 Apr 19
I was there last year too Dyno my car and i will be making plans to return this year Great Place Great People
Tim Luesby
17:27 25 May 19
Great guys who know what they are doing. Got an extra 86 hp with some adjusting and the car has never run better.
Joe Chevelle
04:01 07 Aug 19
Great place to get tuning done they help me alot and greater people
Jeremy Backs
13:22 02 Sep 19
Brought my Merkur to get tuned after being parked for 4 years, during that time it got a built motor, transmission and turbo upgrade, Marc, Wally and Chris all did a spectacular job, even when scratching there heads for a couple issues, they kept on having a positive attitude and even tried to teach me a few things and show how the process is done, these guys are definitly beyond the definition of professional and will take care of your car and you, I completely recommend bringing your car, bike, anything with a motor and these guys will figure it out and will help make safe reliable power. Even gave the Merkur a plug in his Facebook Livestream!! If you want to see what these guys do check them out of facebook or give them a call, these guys have your back.
Shawn Lewis
20:59 04 Sep 19
Great service very professional
Michael Papatzimas
19:37 04 Oct 19
Had a baseline Dyno done. Ready for a tune. Thanks Mark!
Ryan A
03:25 19 Apr 20
Extremely satisfied with International Dyno Authority. Marc and Wally are exceptionally knowledgeable and take the time to explain the processes and progression. Highly recommend!
04:40 11 May 20
Fantastic Service from Marc and Wally. They are super friendly and extremely knowledgeable. Highly recommend them to anyone looking to have their car tuned and or get a baseline. Best Engine and Chassis Dyno around!!
Glen Lastiwka
04:52 31 May 20
House of power! Wally and Marc are one the best tuners around . Very professional and easy to work with.
Phil Tavares
18:15 06 Jun 20
The best dyno shop in Ottawa ! They treat you like family. Very professional and knowledgeable. I had my 5th Gen Camaro SS tuned by Marc and Wally and left smiling from ear to ear. The car runs super great and I have absolutely no complaints. Marc explained everything clearly and Wally did his magic, they got the beast out of it ! 75HP increase and over 100TQ at the wheels. It feels and drives like a new car on steroids. I would highly recommend this place for your tuning needs. Thanks guys 👍
Bart Bristow
15:49 22 Jun 20
Great place to have your car tuned. Very experienced and knowledgeable folks that also make it fun!
Sylvain Deshaies
02:23 14 Jul 20
This is an awesome friendly professional team, who worked at tuning this Gen 3, Coyote engine with 10R80 transmission, quite an amazing result, did not expect that much but you guys did it, thank you to Wally Walter Alberto and Marc Chartrand. Highly recommends this shop for tuning needs, this is the place, you will get results. Bravo zulu to all. The Orange Team lolll Anne & Sylvain
Tayler Bailey
19:20 25 Jul 20
Best place around to bring your car for a little more hp
Russ Salo
12:20 30 Jul 20
Marc and Wally are great at what they do! It's a real pleasure to work with them. There's no pretense or posturing here just good honest HOT ROD experience. Marc answers the emails you send..good communication no flakiness like so called other tuners or experts...They were able to pull about 60 extra HP out of my 440 Charger. As well they had me back for a small adjustment I wanted done and Wally diagnosed the problem in about 3 minutes and tweaked the program on my MSD EFI and POW!!! Throttle response I was hoping for...wonderful....
Tristan Beavan
03:47 25 Aug 20
Came in to get my axle and tire size recalibrated. Easy fix, but why stop there?.. you are at a Dyno shop! Woke my truck up from a 20 year nap. Less fuel, more power, and you wouldnt know my short box chev is a V6. The guys are great to deal with, very knowledgable, and talk honestly. The guy that left before me said "You will love this". 60s guy in a 60s muscle car with a smile bigger than a kid with candy. He wasn't wrong.
Sandro Savone
18:00 01 Sep 20
The absolute go to place to get your car tuned! Thanks to Marc and Wally! It was a Great Experience!
13:18 10 May 21
BEST CUSTOMER SERVICE EVER. I actually only had basic knowledge about dyno tuning and i called these guys to book a tone for a car i was going to buy from ottawa and he filled me with all the details i needed and more i needed to know about the car and tune, now i have a good idea what to ask b4 i even buy the car, i wouldnt even mind diriving all the way from toronnto to this place to do any work with my cars. NO WORDS BUT RESPECT.
Pierre Ladouceur
13:31 06 Mar 21
Marc and Wally are awesome guys and are very knowledgeable! They were able to answer all my questions and educate! I went in with my 2017 Silverado 5.3l and they were able to get an extra 190ftlbs/lb of torque and 135whp out of it, with there custom tuning. Incredible work these guys performed!
The Last
00:48 16 Jun 21
Hands down. Marc And Wally have got it going on. they literally pulled a rabbit out of a hat with my truck. Yes! it is expensive! Yes it is worth it! Yes I would do it again! if you compare dollar for dollar what you get with other " tuners" this is an absolute no brainer. Proud to say I was able to join the 400HP club with their help! Book your appointment with these guys, and unleash the true potential of