If you drive a Cummins, Duramax, or Powerstroke, you know these trucks are built to handle hard work, heavy loads, and long hauls. But factory settings hold them back from their full potential—limiting power, efficiency, and durability.
At Bootlegger Industries in Oak Ridge, TN, we know stock isn’t always enough. We specialize in diesel repair, performance upgrades, and custom modifications to make your truck work harder, tow stronger, and last longer.
Let’s break down stock vs. custom diesel and why upgrading could be the best move for your truck.
Stock Diesel Trucks: What You Get from the Factory
Stock diesel trucks are built for reliability and efficiency, meeting federal emissions and fuel economy standards. However, manufacturers limit engine performance to comply with regulations and reduce warranty claims.
Pros of a Stock Diesel Engine
- Reliable & Durable – Designed for daily driving, towing, and hauling.
- Factory Warranty Protection – No risk of voiding coverage.
- Optimized Fuel Efficiency – Maintains conservative fuel consumption.
Cons of a Stock Diesel Engine
- Restricted Performance – Limited horsepower and torque output.
- Factory Constraints – Conservative settings reduce potential power.
- Emissions Equipment Limitations – Some systems reduce efficiency and add maintenance concerns.
For light-duty driving or basic towing, a stock setup may work well. But if you need more power, efficiency, or towing capability, performance upgrades can unlock your truck’s full potential.
Best Diesel Engine Upgrades for Power & Performance
At Bootlegger Industries in Oak Ridge, TN, we specialize in diesel stock engine upgrades that enhance power, efficiency, and reliability. Here are some of the top performance upgrades we recommend:
1. Cold Air Intakes & High-Flow Filters
More airflow means better combustion and increased horsepower. Upgrading your intake system allows your diesel engine to breathe easier and work more efficiently.
2. Performance Exhaust Systems
A high-performance turbo-back or cat-back exhaust system improves airflow and reduces exhaust restriction, leading to better fuel economy and power gains.
3. Turbo Upgrades & Intercoolers
Upgrading your turbocharger or adding a larger intercooler can significantly increase boost pressure, resulting in massive horsepower and torque improvements.
4. Heavy-Duty Transmissions & Clutch Kits
More power means more stress on your drivetrain. If you’re upgrading your engine, you’ll need stronger transmission components to handle the extra torque.
5. Suspension & Lift Kits
For off-road performance and improved towing, suspension modifications like lift kits and heavy-duty shocks can enhance ride quality and stability.
Stock vs. Custom Diesel: Which One Is Right for You?
Still deciding between stock vs custom diesel? Here’s a quick breakdown:
Feature | Stock Diesel | Custom Diesel Upgrades |
Power Output | Limited | Increased Horsepower & Torque |
Fuel Efficiency | Optimized for daily use | Improved with performance parts |
Towing Capability | Good but not maximized | Enhanced for heavy loads |
Throttle Response | Slow & Laggy | Quick & Responsive |
Customization | None | Fully Adjustable to Your Needs |
At Bootlegger Industries, we understand that every truck owner has different needs. Whether you need a small power boost or a full custom build, we have the experience and knowledge to deliver top-notch diesel truck repair and upgrades.
Expert Diesel Repair & Performance Upgrades in Oak Ridge, TN
Your diesel truck is an investment, and at Bootlegger Industries, we help you get the most out of it. We specialize in diesel engine repair, performance upgrades, and more for Cummins, Duramax, and Powerstroke engines, delivering unmatched service and craftsmanship you won’t find at other shops.
Our Services:
- Diesel Engine Repair – Diagnostics, electrical repairs, drivetrain work, and full-service maintenance.
- Fleet Maintenance – Routine inspections, digital vehicle inspections (DVIs), preventive maintenance, and emergency repairs for FedEx, police, fire, and emergency vehicles.
- Aftermarket Modifications & Performance Upgrades – Lift/lowering kits, suspension enhancements, turbo and exhaust system upgrades, high-performance cooling solutions, and custom lighting.
- Accessories & Customization – Bed covers, paint-matched trim, rock lights, off-road gear, wheels, and tires.
- Electrical & Diagnostic Services – In-depth diagnostics, electrical troubleshooting, and performance optimization.
We stand behind our work with manufacturer warranties on parts and a 60-90 day warranty on our builds. Military and first responders receive a 10% discount (up to $500) as a token of our appreciation. We’re also proud to support local ROTC programs, FFA, youth sports, first responders, and veterans through sponsorships and community initiatives.
Diesel Performance Starts Here—Call Bootlegger Industries
At Bootlegger Industries, we don’t just repair diesel trucks—we transform them. Because renovation becomes a necessity when you demand more power, better efficiency, and superior performance from your Cummins, Duramax, or Powerstroke.
- Call or text us at 865-730-3156
- Visit us at 91 Midway Ln, Oak Ridge, TN 37830
Don’t settle for stock. Upgrade your truck today!
