With more than 5000 truck tuned each year, Diesel Spec is the Canadian leader in diesel engine perfo...Read more
New diesel tuning for Cummins engines now available. We perform EGR-DFP-UREA Delete tuning on the following models: Cummins ISX, Cummins ISM, Cummins ISL, Cummins ISB, Cummins ISC.Read more
Diesel Spec can perform diesel engine tuning on all Caterpillar models. DPF VVA Delete tuning for Caterpillar C13 and Caterpillar C15.Read more
New diesel performance improvements now available for Detroit Diesel engines. Diesel DFP-UREA Delete engine tuning for heavy trucks available for the following models: Detroit DD13, Detroit DD15, Detroit DD16.Read more
Diesel Spec provides Mercedes diesel engine tuning services. We perform EGR-DFP delete tuning on the following models: MBE900 and MBE4000.Read more
New tuning service for International trucks. Diesel Spec provides EGR-DFP-UREA Delete tuning services for various engine models: International DT466, International Maxxforce, Maxxforce MF.Read more
Thanks to Diesel Spec to made my Cummins ISX runs with more power and better fuel economy ! Great place to deal with smile face.
- Fedex Canada
Thanks to the Diesel Spec team for your professional work! Not only is my truck more fun to ride since you upped its performance, but I also make f..
- Menick Lebeau , Quebec
Un énorme merci à la team de Dieselspec de la part d'un jeune routard qui commence à peine à manger du bitume comme on dit. De grosse économie nive..
- Guillaume Rosset, France
Diesel Spec Tuning
Diesel Spec Inc. is the leader in truck diesel engine ECM tuning technology. With over 30,000 medium and heavy-duty diesel truck tuning performed, Diesel Spec has built its reputation with countless satisfied customers all over the world.
If you are looking to improve fuel economy and increase the power of your current engine, we are confident that our expertise can help you achieve these goals. We offer a 30-day satisfaction money back guarantee on all our tuning.
Diesel Spec dealers
Diesel Spec has over 300 dealer locations in North America. We are growing with dealers now in Australia, New Zealand, Mexico, France, Austria, Chile and even South Africa. We can serve you, no matter wherever you may be, all around the world.
Diesel engine tuning available
Diesel Spec specializes in fuel efficiency and diesel performance tuning for owner/operators and fleets alike. Our high performance tuning designed for drag racing and off road competition may require EGR valve delete, DPF delete ( Diesel Particular Filter ) and/or Urea deletion kits. These changes would make for a winning upgrade.
We offer tuning for the following brands:
Cummins (Cummins ISX EGR-DFP-REA delete, Cummins ISM EGR-DFP-UREA Delete, Cummins ISL EGR-DFP-UREA Delete, Cummins ISX EGR Delete kit, Cummins ISB ISC EGR-DFP-UREA Delete, Cummins ISX12 ISX15 EGR-DFP-UREA Delete)
Caterpillar (CATERPILLAR C13 DPF VVA DELETE, CATERPILLAR C15 DPF VVA DELETE, CATERPILLAR twin to single turbo, CATERPILLAR CGI DELETE, CATERPILLAR DPF DELETE),
Mercedes (MBE900 EGR DELETE, MBE4000 EGR DELETE, MBE900 EGR-DFP DELETE, MERCEDES MBE EGR-DFP DELETE),
International (INTER DT466 EGR DELETE, INTERNATIONAL DT466 EGR DELETE, INTERNATIONAL MAXXFORCE EGR-DPF DELETE, MAXXFORCE MF EGR-DPF-UREA DELETE, MAXXFORCE 5 DPF DELETE, MAXXFORCE 7 DPF DELETE, MAXXFORCE 9 DPF DELETE, MAXXFORCE 10 EGR-DPF-UREA DELETE, MAXXFORCE 13 EGR-DPF-UREA DELETE, MAXXFORCE 15 EGR-DPF-UREA DELETE),
Volvo (VOLVO D12 EGR DELETE, VOLVO D16 EGR DELETE, VOLVO D11 EGR-DPF-UREA DELETE, VOLVO D13 EGR-DPF-UREA DELETE, VOLVO D16 EGR-DPF-UREA DELETE, VOLVO TRUCK EGR-DPF-UREA DELETE),
Paccar (PACCAR EGR-DPF-UREA DELETE, PACCAR PX6 EGR-DPF DELETE, PACCAR PX8 EGR-DPF DELETE, PACCAR PX7 EGR-DPF-UREA DELETE, PACCAR PX9 EGR-DPF-UREA DELETE, PACCAR MX10 EGR-DPF-UREA DELETE, PACCAR MX13 EGR-DPF-UREA DELETE, PACCAR MX DPF UREA DELETE KIT)
Mack (MACK TRUCK EGR-DPF-UREA DELETE, MACK MP7 EGR-DPF-UREA DELETE, MACK MP8 EGR-DPF-UREA DELETE, MACK MP10 EGR-DPF-UREA DELETE, MACK EGR DELETE KITS).
and most agricultural engines.
Established in 1987 and with over 27 years of experience in heavy duty diesel engine, Diesel Spec Inc. is the best choice for all your heavy duty truck engine and performance needs.
Today, Diesel Spec is a recognized benchmark in the diesel engine repair and tuning field. Thanks to its specialization in the heavy-duty truck diesel engine niche, the company has managed to develop – throughout the years – undisputed expertise in diesel performance improvement by offering, among other things, pioneering innovations in tuning and ECM. Whether you own heavy-duty trucks intended for commercial or agricultural transportation, or for construction sites, Diesel Spec is able to take into account your engine’s technical features in order to offer heavy truck repair and diesel tuning services that will exceed your expectations. Tuning technology and material are put to use on some of the biggest diesel engine brands (Caterpillar, Cummins, Detroit Diesel, International, Mack, Mercedes, Paccar, Volvo…). With a Montreal-based garage and a network of retailers across Canada, Diesel Spec’s tuning services will bring your engine’s performance to a whole new level, which will bring you diesel fuel economy, reliability and power.