dyno built 
custom tunes

Our custom tunes are developed and proven on a chassis dyno to give you the best tuning available. We have tunes available for a variety of applications: performance, towing, fuel-savings, highway, heavy traffic, or a simple general tune for your daily driver.

Optimum Performance

Improved Fuel Efficiency

Easy Installation

Free Shipping

Satisfaction Guarantee

What is a custom tune?

Tuning is the process of rewriting the stock engine parameters for improved performance. A custom tune is written specifically for your vehicle, including any modifications. The tune is not only developed based on your mods but also on the specific application of your vehicle. For example, we offer custom tunes for performance, towing, highway driving, city driving, max fuel efficiency, as well as a general tune for your daily-driver. When you order an International Dyno Custom Tune, the order form asks you to list all of the engine modifications you’ve made to your vehicle. This allows us to build a custom tune that usually provides the same level of performance as if you came in for a chassis dyno tuning.

A custom tune is unlike the cheaper “canned tunes” which are generic one-size-fits-all tunes and do not account for engine modifications or specific applications.

tuning new and late-model vehicles

New vehicles come out of the factory with generic parameters that are suitable for an average daily driver, to get decent fuel economy, to provide adequate acceleration when needed, and to offer an overall smooth drive. An International Dyno Authority Custom Tune will adjust your vehicles parameters to deliver the task-specific performance you need because we don’t all drive the same or under the same conditions. Some vehicles spend most of their time in stop-and-go city traffic, while others regularly commute long distances at highway speeds. Some of us want pure performance, some need to tow a trailer regularly, and others just want the best possible gas mileage. You choose the type of tune you want based on your driving habits and we will customize it to your needs.

will a tune void my warranty?


This is a common question and the technical answer is “no.” In fact, we have seen a number of our local dealerships selling the exact same handheld programmers that we do. But, it is still not a straightforward and unqualified “no.” The videos below do a good job of explaining this in more detail.

However, in order to help ensure your safety, the safety of your vehicle, and to help avoid potential warranty issues, all of our tunes are kept within OEM specifications. We have seen numerous vehicles on our chassis dyno, which had custom tunes installed from other suppliers, and found many settings well outside of factory specs. We have sometimes seen these improper tunes cause cracked manifolds, leaking valve cover gaskets, scored cylinder walls, and detonation. Stay safe and purchase your tune from International Dyno Authority.

Will performance tuning void my warranty?


Magnuson-Moss Warranty Act & modded cars


international dyno authority custom tunes

How do i purchase an International dyno authority custom tune?

Select a package below and complete the online order form. We will contact you within 24-hours to arrange payment and confirm your order and compatibility with your chosen programmer. After payment is received the programmer will be shipped to you (usually 2-4 days for delivery) and the custom tune will be prepared and emailed to you within 24-hours.

Installation requires a computer to upload the emailed tune to the programmer. Then simply plug the programmer into your ECU/PCM and follow the step-by-step directions on the display screen. If you run into any problems we are here to help 7-days a week.

money back satisfaction guarantee

We are confident that you will be satisfied with an International Dyno Authority Custom Tune and will enjoy the improved driveability and responsiveness. We are so confident that we offer a 30-day money back guarantee.

If you’re not happy with the results, just set your vehicle back to stock and return the programmer to us (in original condition) and we’ll be happy to provide a full refund (just be sure to contact us before any return!).

90-day Free remapping

If you make a modification that affects your vehicle’s aspiration within 90-days of installing one of our custom tunes, you can send us the map file via email, and we will update it to match your mod at no cost!* After the 90-days, at any time within one year from the original date of purchase, we can still provide an update to your tune for only $99.99.

So, there is no need to hold off on tuning until after you install those headers you’re planning on buying in a few months. With our remapping program, you can enjoy the benefits of a custom dyno tune today!

multiple tunes

There are numerous scenarios where a second tune can be practical. Our custom tunes are designed for specific applications. We offer performance tunes, towing tunes, best fuel economy tunes, traffic tunes, highway-driving tunes, and daily-driver tunes. But if you routinely use your vehicle for very different applications, you may want to invest in a second or multiple custom tunes.

For example, if your big F150 is your daily driver but also tows a heavy 5th wheel camper in the summer, you may want a tune for fuel economy and a tune for towing to give you the security of extra controllability as you haul down the highway with the family.

We’ve also had customers who run highly modified vehicles as a daily driver on a general tune but switch to a performance tune when they take it to the track on the weekends.

Other drivers use their vehicles for seasonal work. So, if you carry tools in the back of your pickup all summer, and then put a plow on the front for winter, you would definitely benefit from a two-tune package. You can alternate between tunes with the handheld programmer or you can add one tune in your vehicles “normal” mode and the other in the “sport” or the “towing” mode (if equipped). If you are ordering a multiple tune, just make a note on the order form as to which you would prefer.



You’ll find less expensive tunes online, but many a customer has come into our shop, having purchased a cheaper tune, and were dissatisfied with the results after experiencing problems such as cracked manifolds, leaking valve cover gaskets, scored cylinder walls, and detonation. To remedy the issues we had to retune their vehicles on the chassis dyno – in the end, they paid more for that ‘bargain’ than if they had purchased our custom tune in the first place!


All of our programmers preserve the stock tune and allow you to switch back-and-forth from custom tune to stock tune at any time. The SCT programmers can be left connected to your ECU full-time, and the programmer can be mounted to your windshield or dash to display real-time sensor data such as EGT, air-fuel ratio, coolant temperature, etc.

NOTE: not all programmers work on all models. If the programmer you select is not available for your vehicle, we will contact you within 24 hours to recommend an alternative programmer.

Custom Tune Only (no Programmer)

$329.99 US

$199.99 US when purchased in combination with one of our other tune/programmer packages

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur viverra tortor aliquam sapien vulputate, et dictum augue vehicula. Vivamus vel condimentum elit. Nullam volutpat est id ligula imperdiet vehicula. Morbi non venenatis augue, eget convallis tortor. Aliquam erat volutpat. Proin in magna eu leo viverra volutpat efficitur non enim. Nullam id tempus ante.

Custom Tune with Alientech Powergate 3 Programmer

$549.99 US

  • Touch screen with step-by-step easy installation directions
  • Easy restoration back to stock
  • Reads & clears PCM diagnostic trouble codes
  • PC/Windows compatible

Custom Tune with SCT X4 Performance Programmer

$689.99 US

  • Read real-time sensor data such as EGT, air-fuel ratio or any other 0-5 Volt source
  • Stores up to 10 custom tunes
  • WiFi firmware updates
  • Data logging
  • Easy restoration back to stock
  • Reads & clears PCM diagnostic trouble codes
  • PC/Windows compatible

Custom Tune with SCT BDX Performance Programmer

$689.99 US

  • Read real-time sensor data such as EGT, air-fuel ratio or any other 0-5 Volt source
  • Stores up to 10 custom tunes
  • WiFi firmware updates
  • Cloud
  • Data logging
  • Easy restoration back to stock
  • Reads & clears PCM diagnostic trouble codes
  • PC/Windows compatible

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.


Privacy Policy
Cookie Policy


2535 blackwell street,

unit 108, ottawa, ontario

marc chartrand


★   reviews

powered by Facebook
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 awesome.read 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 Roadking.read 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 tune..read 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 power.read 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 face.read more
Next Reviews

Pin It on Pinterest

Share This