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January 2024 by Sherif El Sebakhy
Excellent service, very knowledgeable and detailed with their work and follow up. They kept me in the loop throughout the whole process. Highly recommend!!
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April 2023 by chris davies
Excellent service , very polite crew..fixed up my computer , and now it runs great
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March 2023 by Brendon Jones
We've had 2 different tuners in the states attempt to tune my 2015 kenworth t800 with a 550 cummins, between the 2 different tuners, about 17 different tunes that just did not perform,i start researching and find diesel spec, and boy am i glad i made the call,truck runs like a dream, dont waste your time going anywhere else, diesel spec is #1,thank you for fixing my truckbrendon jones
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March 2023 by Jesse James
Good place
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March 2021 by Gilles Trudel
Good people.They have a 1980 kenworth long nose,it looks fantastic.
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March 2020 by Steve Morin
Never been disappointed. Always well served and satisfied with their work
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August 2019 by Rob R.
Completely false advertising! Do not believe their 30 day moneyback guarantee, as they will come up with a 100 different reasons not return it to you. I saw no additional performance in either fuel consumption or horse power. Since they are in Canada, and I am in the USA, I have no chance of getting my money returned. Their product is EXTREMELY overpriced and underrated. I paid thousands to realize it was a waste of time and money. Stay far far away from these people, and save your hard-earned money.
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March 2019 by Ghislain Loignon
A great team
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March 2019 by Garry Dhanju
Good customer service and very helpful
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March 2019 by Rodney Whidden
I had my truck deleted 10 months ago. I've had nothing but problems with my truck since, exhaust leak after exhaust leak then manifold gasket went and now the engine has blown up 412300km on it when it was deleted now 612231km this engine only has 8888hrs on it.tks Orangeville truck centre and diesel spec.2016 pete.
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March 2018 by Jonathan Beaudet
Best tunes to wake up your old tired truck.
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March 2018 by sanuvir san
Good professional services. They know what they are doing. Very knowledgeable staff with 100 % positive results
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March 2018 by hinderkus rademaker
Diesel spec help many. Owner operator.and. Fleets Too survive financely and made a better living for them self. In very tough times therefor. I would recomend. Very strongly. For anybody who hasn't used dieselspec yet. Saving. $$$$. ( it is not what you make its what you don't have too spend. )
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March 2018 by emmanuel braze
Best place for diesel engine tuning (all brand)
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March 2018 by Johannus Neggers
This is the only place to go and get your engine peeked and tuned. They definitely know what they are doing. My truck has never run better and I am saving $ with the increase in my fuel economy.
