Diesel Spec

Diesel Spec Specializing in Performance and Fuel Economy tuning for Big Rigs
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Diesel Spec is specialized in custom Ecm Tuning for heavy duty diesel trucks to give better performance and save on fuel.

01/08/2026
There’s just something unmistakable about a 359 Peterbilt. This flat black beauty with one of Peterbilt’s coolest stripe...
01/07/2026

There’s just something unmistakable about a 359 Peterbilt. This flat black beauty with one of Peterbilt’s coolest stripe designs, was the pride & joy of John Pompeo and he enjoyed bringing it to various truck shows after getting it finished. He’s since sold it and the new owner is keeping it looking just as nice.

Just something unmistakable about a 359 Peterbilt, it was the pride & joy of John Pompeo and he enjoyed bringing it to various truck shows

Dave Thomas is the proud owner of this matching pair of “Freightshakers”, that look like they just jumped off a Freightl...
01/05/2026

Dave Thomas is the proud owner of this matching pair of “Freightshakers”, that look like they just jumped off a Freightliner sales brochure! The both have one of Freightliner Trucks’ trademark paint schemes, with some modern day custom accessories finishing things off in style.

Dave Thomas is the proud owner of this matching pair of "Freightshakers", that look like they just jumped off a Freightliner sales brochure!

This Peterbilt daycab is custom from the front bumper back to the painted single fenders over the rear wheels! With its ...
01/03/2026

This Peterbilt daycab is custom from the front bumper back to the painted single fenders over the rear wheels! With its straight pipes, painted visor, and custom paint job, this is one daycab that definitely turns heads!

With its straight pipes, painted visor, and custom paint job, this is one daycab that definitely turns heads!

A new year begins, bringing new goals, challenges, and opportunities. At Diesel Spec, we are entering the year ahead wit...
01/01/2026

A new year begins, bringing new goals, challenges, and opportunities. At Diesel Spec, we are entering the year ahead with the same passion, attention to detail, and commitment to our customers.

We wish you a strong, reliable, and high-performing year, both professionally and personally. Thank you for being part of the journey. Happy New Year 🎆

Une nouvelle année s’amorce, et avec elle de nouveaux objectifs à atteindre. Chez Diesel Spec, nous abordons l’année à venir avec la même passion, le même souci du détail et le même engagement envers nos clients.

Nous vous souhaitons une année solide, fiable et performante, tant sur le plan professionnel que personnel. Merci de faire partie de notre route. Bonne et heureuse année 🎆

The Ford LTL-9000 was the flagship of Ford’s heavy duty truck line and was very popular among owner-operators. Its rugge...
12/31/2025

The Ford LTL-9000 was the flagship of Ford’s heavy duty truck line and was very popular among owner-operators. Its rugged good looks were unmistakable, and this blue & silver beauty shows us just how nice they were until production stopped in 1998.

The Ford LTL-9000 was the flagship of Ford's heavy duty truck line and was very popular among owner-operators.

This classic K-100 Kenworth cabover definitely brings back memories of a different era in the trucking industry. With it...
12/29/2025

This classic K-100 Kenworth cabover definitely brings back memories of a different era in the trucking industry. With its original factory wheelbase and factory styling, it still shines among the working show trucks of today!

This classic K-100 Kenworth cabover definitely brings back memories with its original factory wheelbase and factory styling

This handsome Peterbilt & polished “bucket” combination definitely brightens up the Fall foliage in the backround! It ma...
12/27/2025

This handsome Peterbilt & polished “bucket” combination definitely brightens up the Fall foliage in the backround! It may get dirty working during the week, but it doesn’t stay that way very long, as you can tell by looking at our photo.

It may get dirty working during the week, but it doesn't stay that way very long, as you can tell by looking at our photo.

Address

200 Goyer
Laprairie, QC
J5R5G5

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 1pm

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North American Leader In Performance And Fuel Economy For Big Rigs

Diesel Spec is specialized in custom Ecm Tuning for heavy duty diesel trucks to give better performance and save on fuel. We are the leader in truck diesel engine ECM tuning technology. With over 50,000 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.