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Diesel Turbo Systems

Diesel Turbo Systems | S300, S400, Swap Kits & Compound Turbos

From bolt-on turbo replacements to compound kits and VGT upgrades, our Turbo Systems category covers every power goal for Cummins, Ford, and Chevy diesels.  High-flow turbo systems built for strong power, clean boost response, and reliable towing performance.

 

Advanced Turbo Systems for Cummins Engines

Why Upgrade Your Diesel Turbocharger?

  • ✅ More Power & Torque – Replace your restrictive factory turbo with a high-flow S300 or S400 unit.
  • ✅ Lower EGTs – Better air-fuel ratios help reduce heat under load.
  • ✅ Faster Spool-Up – Reduce turbo lag with improved boost response.
  • ✅ Better Towing Performance – Maintain speed and control even on steep inclines.
  • ✅ Built to Last – Stronger internals and materials than OEM.

  • Knowing when to replace your single turbocharger is vital for keeping your Cummins, Powerstroke, or Class 8 & 7 truck running smoothly.

  • Here's a simple guide to help you spot the signs:

    • Less Power: If your truck feels weak when accelerating, your turbocharger might be failing.
    • More Smoke: Watch out for thick, dark smoke from your exhaust. It could mean your turbocharger is damaged.
    • Strange Noises: Listen for odd sounds from your engine or turbo area, like whining or grinding, especially during acceleration.
    • Oil Use: Keep an eye on your oil levels. If they're dropping fast without any leaks, your turbocharger could be burning oil.
    • Check Engine Light: Don't ignore warning lights on your dashboard, especially the check engine light. It could signal turbocharger trouble.

    Stay alert to these signs to catch turbocharger problems early and avoid bigger issues down the road. For top-quality replacements and expert advice, turn to Diesel Power Source.

Refine:

Turbo Upgrades S300/S400 HE300VG/HE400VG S400 Single Turbos HE300VG / HE400VG VGT Turbos 3rd Gen Swap Kits for 6.7L Cummins Compound Turbo Kits — Twin Turbo Systems Add-A-Turbo Kits Turbonator® VGT Upgrades Ball Bearing Turbos Fummins Conversion Kits Chummins Conversion Kits ISX15 / X15 Turbo Conversion Kits Turbine Housings

Diesel Turbo Systems - FAQs

Typical EGT reductions when towing heavy loads:

  • Upgraded single turbo (S300): 150-200°F cooler than stock
  • VGT upgrade: 100-175°F cooler than stock
  • Compound turbo system: 200-300°F cooler than stock

Results depend on your specific setup (tune, weight, terrain), but most customers report staying in the safe 1,000-1,200°F range instead of 1,300-1,500°F with stock turbos.

Lower EGTs mean less stress on head gaskets, manifolds, and turbo components—extending engine life.

It depends on your primary use:

  • Towing-focused (12k-20k+ lbs regularly): S300 singles or compound systems deliver the best EGT control, spool response, and sustained performance under load. Expect 150-300°F cooler EGTs.
  • Balanced street/tow: VGT upgrades or moderate S300 turbos maintain great daily drivability while improving towing capability.
  • Performance/competition: Larger S400 singles or aggressive compounds for 600+ HP builds prioritizing peak power.

Not sure? Contact our tech team for a personalized recommendation based on your truck, weight, and goals.

For reliable performance, we recommend:

Essential with any turbo upgrade:

  • Quality tuning matched to your new turbo
  • Upgraded exhaust (3" or 4" turbo-back)

Recommended for 500+ HP:

  • Upgraded intercooler (lowers intake temps 50-75°F)
  • Lift pump or fuel system upgrades
  • Transmission tuning or upgrades

Recommended for 600+ HP:

  • Injector upgrades
  • CP3 pump upgrade (6.7L)
  • Built transmission

Our tech team can help you plan the right supporting mods for your power goals and budget.

Single Turbo Best For:

  • Daily driving with occasional towing (under 15k lbs)
  • 400-550 HP builds
  • Budget-conscious upgrades
  • Simple installation
  • Good street manners

Compound Turbos Best For:

  • Heavy frequent towing (15k+ lbs) or hot-shot work
  • 550-700+ HP builds
  • Mountain terrain and sustained grades
  • Lowest possible EGTs and drive pressure
  • Maximum airflow capacity

Bottom line: If you tow heavy loads regularly or need sustained high-power output, compounds deliver superior thermal management and reliability. For moderate use, a quality single turbo provides excellent results at lower cost.

Installation time varies by kit complexity and experience level:

  • Single turbo upgrade: 6-10 hours for DIY, 4-6 hours professional
  • VGT upgrade: 4-6 hours for DIY, 3-4 hours professional
  • Compound system: 10-16 hours for DIY, 6-10 hours professional

Our kits include detailed photo instructions and many customers complete installation over a weekend. Professional installation typically costs $800-1,500 depending on kit and shop rates.

Pro tip: Read through the entire instruction manual before starting, and have all tools ready.

Diesel Power Source turbo systems are engineered specifically for diesel platforms, focusing on proper airflow, durability, and real-world performance rather than one-size-fits-all solutions.

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