Diesel service · Frankfort, Indiana
We are not gas-only. Whatever you have heard.
Duramax · Cummins · Powerstroke
The performance sign confuses people
Because the shop is known for GM performance, half the county assumes we only touch gas. Duramax, Cummins and Powerstroke all come through here for diagnosis, injectors, turbo work and tuning — and the hub dyno handles diesel torque without the tire slip a roller gives you.
Duramax
LB7 through L5P
Injectors, glow plugs, turbo, transmission behaviour and calibration.
Cummins
5.9 and 6.7
Lift pump and injection diagnosis, turbo work, and towing-focused tuning.
Powerstroke
6.0 through 6.7
The known failure points, tested properly rather than replaced on a hunch.
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Why a hub dyno matters more on a diesel
High torque is exactly where roller dynos lie to you. The tire slips, the number drops, and the tune chases noise. Bolted to the hub, a 1,200 lb-ft truck reads the same on pull one and pull six.
Questions we get asked
Do you actually work on diesels, or just gas performance?
Diesels come through here regularly — Duramax, Cummins and Powerstroke. The performance sign confuses people, but diagnosis, injectors, turbo work and tuning are all normal work for us.
Can you dyno a diesel truck?
Yes, and the hub dyno matters more on a diesel than anywhere else. High torque is exactly where roller dynos lose grip and start reading low.
My truck has a check engine light but drives fine. Worth bringing in?
Yes. On a modern diesel the emissions and fuel systems are expensive, and a small fault caught early is usually the difference between a sensor and an injector set.
Bring the truck
Tell us what it is doing, or what you want it doing.