About Us

Tax Free Horsepower

Here at Delaware Diesel Performance we are driven to outlast, outperform, and outshine our competition. We strive to achieve your vehicle's true potential in terms of performance and reliability. While diesel engine repair and modification is our true calling, we also specialize in performance upgrades on non-diesel vehicles. Everything from oil changes to diesel swaps, turbo kits, and custom fabrication, we meet all of your performance needs!

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Delaware Diesel Performance

A Subdivision of Tull’s Unlimited LLC

(302) 858-8800


Service by Appointment Only