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 vary from model to model. Call for pricing and to book an appointment. 

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!

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 your vehicles engine. Way To Go International Dyno Authority!
Paul Landry
23:20 24 Oct 21
Wally is a master I have 2014 Challenger RT afe longtime headers injen evolution intake 430 hp 460 tq I got 0 to 60 4.6
Paul Landry
22:37 26 Oct 21
Wally is a master I have 2014 Challenger RT afe longtube headers injen evolution intake 430 hp 460 tq I got 0 to 60 4.6 seconds
Alex Paine
00:45 24 Nov 21
Best Dyno i ever been . professional staff highly knowledgeable.
David Nunya
00:10 25 Feb 22
Can't express how much I appreciate these group of great guys! Took the time to show/explain what they were doing with my ride and glad I chose Dyno Authority to tweak my toy. My ride runs better than ever! Doesn't matter what you drive, these guys will make it more efficient and add power!
Hamza Rawasia
21:20 29 Nov 17
They were very helpful with tuning my car. I would glady recommend the place.
Jason Villemere
18:41 15 Oct 22
International is Best dyno place hands down. I went to RSP Motorsports in London which was a big mistake. They destroyed my computer and made me pay for it. Truck never ran good after they touched it. I called Mark and Wally and they took care of me and went out of there way to make sure my truck ran the best it could. Fantastic guys to deal with. Don’t go anywhere else period!!!
Next Reviews Write a review