Why Upgrade to an MBRP Turbo Back Diesel Exhaust?

The MBRP Turbo Back Diesel Exhaust system replaces the entire factory exhaust path from the turbocharger outlet to the tailpipe. Unlike a simple cat-back or axle-back system, a turbo-back setup eliminates the most restrictive sections of the stock exhaust, including the diesel particulate filter (if applicable), catalytic converter, and muffler, freeing up exhaust gases to flow with minimal backpressure. This not only produces a deep, aggressive tone but also unlocks measurable gains in horsepower, torque, and throttle response—especially when paired with a performance tuner.

MBRP is a well-respected name in aftermarket exhausts, known for using high-quality T-304 stainless steel, mandrel-bent tubing, and precise-fit hardware that withstands extreme heat and corrosive diesel exhaust. The “rugged sound” many enthusiasts seek comes from a combination of the turbocharger’s natural spool, reduced muffling, and the pipe diameter chosen for your specific application (typically 4 to 5 inches). Below, we break down everything you need to know before, during, and after installation.

The MBRP Turbo Back System: Components and Design Philosophy

What Makes It “Turbo Back”?

A turbo-back exhaust starts directly at the turbocharger’s outlet (the downpipe). The stock downpipe is often the most restrictive part of the factory system—narrow, with a crimped bend that chokes flow. MBRP’s downpipe replaces it with a smooth, mandrel-bent section that reduces turbulence and allows spent exhaust gases to exit faster. From there, the system includes mid-pipes, a muffler (or delete pipe), and a tailpipe with an attractive tip.

Material and Build Quality

MBRP uses T-304 stainless steel for their Pro Series kits (aluminized steel is also available for budget-minded owners). T-304 offers superior corrosion resistance and longevity, especially important for diesel trucks exposed to road salt and moisture. All tubing is mandrel-bent to preserve consistent diameter through every curve, minimizing flow restrictions. Clamps are heavy-duty, and hangers are reinforced to prevent rattling.

Sound Signature

The sound of an MBRP turbo-back system is distinctly lower and louder than stock, with a pronounced “crackle” on deceleration and a throaty roar under load. No drone is guaranteed by MBRP’s resonator and muffler designs in many kits (though full delete systems will be louder). The aggressive note is what most owners describe as “rugged” — it announces your presence without being obnoxious when cruising. You can further tailor the sound by choosing a muffled or straight-through configuration.

Tools and Safety Gear for Installation

Before you crawl under your diesel pickup, gather these essentials. Having everything ready prevents frustrating trips to the tool box mid-job.

  • Socket set (metric and SAE, including deep wells and extensions)
  • Wrench set (combination and/or ratcheting for tight spaces)
  • Torque wrench (to tighten clamps to spec and avoid warping flanges)
  • Cutting tool (reciprocating saw or angle grinder with a metal blade – only needed if stock exhaust is welded or seized)
  • Jack and jack stands (rated for your truck’s weight; never rely on a floor jack alone)
  • Penetrating oil (like PB Blaster or Kroil – spray nuts and bolts the night before)
  • Safety glasses (debris from cutting and rust is inevitable)
  • Mechanic’s gloves (to protect from sharp edges and hot exhaust)
  • Exhaust hanger removal tool (makes detaching rubber isolators painless)

Safety is non-negotiable. Always work on level ground, chock the front wheels, and allow the engine and exhaust to cool completely before starting. Diesel exhaust components retain heat for hours after driving.

Step-by-Step Installation Guide

Step 1: Prepare Your Vehicle

Park on a flat, hard surface. Engage the parking brake and place wheel chocks behind the rear tires. Use a jack to lift the rear of the truck (and the front if you need clearance for the downpipe). Place jack stands under the frame rails or axle at the manufacturer’s recommended lift points. Never crawl under a vehicle supported only by a hydraulic jack.

Step 2: Remove the Factory Exhaust

Start at the rear. Soak all bolts and sensor fittings with penetrating oil several hours before attempting removal. Common fasteners include 14mm, 15mm, and 18mm bolts on the downpipe flanges, and “U-bolts” at the axle.

  • Disconnect the exhaust from the turbo outlet (downpipe flange). Support the downpipe to avoid straining the turbo housing.
  • Unclip any oxygen sensors or exhaust temperature sensors (use a sensor socket). Label them to avoid mix-ups.
  • If the exhaust is one piece or welded, cut it at a convenient location (behind the cab or before the axle). Wear eye protection and watch for sparks near fuel lines or wiring.
  • Remove all rubber hangers by pulling the metal hanger rod out of the isolator. A pry bar or hanger tool makes this easy.
  • Take the old system out in sections. Dispose of it at a metal recycler.

Step 3: Install the MBRP Downpipe

Begin at the turbo. The downpipe is the most critical part. Apply a small amount of anti-seize to the flange bolts. Position the downpipe over the turbo studs, install the gasket (included or reuse if provided), and hand-tighten the nuts. Check for clearance against the frame, transmission lines, and engine block. Tighten evenly to spec (typically 35-45 ft-lb).

Step 4: Install Mid-Pipes and Muffler

Work from front to rear. Connect the mid-pipe to the downpipe using the supplied band clamp. Do not fully tighten yet—leave the joint loose enough to rotate. Slide the muffler or resonator into place. Many MBRP kits use a “slip-fit” design with band clamps that allow adjustment. Make sure the hanger rods align with the factory rubber isolators. If your kit includes a delete pipe instead of a muffler, install it the same way.

Step 5: Install the Tailpipe and Tip

Attach the tailpipe section to the muffler or last pipe. Position the tailpipe so the tip exits cleanly from under the bumper. Most MBRP tips are clamp-on, so you can adjust the depth and angle. Snug the tip clamp. Check that the tailpipe isn’t contacting the spare tire, shock absorbers, or fuel filler neck.

Step 6: Final Alignment and Torque

With all joints loosely connected, walk the entire system from front to back. Adjust each pipe so there’s at least ¾ inch clearance from the underbody, driveshaft, and suspension components. Start the engine briefly to let the system settle into its natural position (watch for vibration). Then, torque all band clamps and flange bolts to the values listed in the MBRP instructions. Recheck after 50 miles of driving.

Step 7: Test and Inspect

Start the engine again and listen for leaks (a puffing sound). Use a soapy water spray on each joint; bubbles indicate a leak. Tighten the clamp slightly or realign. Drive gently at first, then under varying loads to confirm the sound is clean and there are no rattles. If you have a check engine light (common when removing DPFs), you may need a performance tuner to suppress the code and optimize fueling.

Sound Customization and Tuning

Muffler vs. Straight Pipe

MBRP offers both muffled and straight-through (delete) variants. A muffled system still retains a deep tone but is neighbor-friendly. Straight-pipe setups produce maximum volume and turbo whistle. If you crave the rugged sound but live in a noise-sensitive area, the muffled version is the smart compromise.

Effect of Exhaust Diameter

Common diameters are 4”, 5”, and 5” stepped to 6” on heavy-duty trucks. Larger pipes flow better at high RPM but can reduce backpressure needed for low-end torque. For daily driving and towing, 4” or 5” is ideal. For high-horsepower builds, step up to 5” or 6”. MBRP engineers kits for specific platforms, so follow their recommendation.

Pairing with a Tuner

To fully realize performance gains and eliminate emissions-related codes if you’ve removed the DPF/SCR, consider a diesel tuner (e.g., Edge, Bully Dog, or H&S). A tuner recalibrates the ECU for increased boost, fuel delivery, and transmission shift points. The combination of a turbo-back exhaust and tuning can yield 50–100+ horsepower and 100–200+ lb-ft of torque on modern turbo-diesel trucks. See MBRP’s official site for vehicle-specific dyno charts.

Benefits Beyond Sound

While the primary goal is audio satisfaction, a turbo-back MBRP exhaust delivers real-world advantages:

  • Increased horsepower and torque – reduced backpressure allows the turbo to spool faster and maintain boost.
  • Improved fuel efficiency – particularly under heavy load or towing, less exhaust restriction means the engine works easier.
  • Enhanced throttle response – you’ll feel a crisper pedal, especially from a stop.
  • Lower exhaust gas temperatures (EGTs) – free-flowing exhaust helps keep EGTs in check when towing uphill.
  • Durability – T-304 stainless steel outlasts factory aluminized steel by years.

Maintenance Tips for Your MBRP Exhaust

To keep that rugged sound and performance intact, follow these simple practices:

  • Inspect clamps and hangers every oil change – vibration can loosen band clamps. Re-torque as needed.
  • Check for rust spots – even T-304 can corrode in harsh salt-belt winters. Clean and apply high-temp paint if chipped.
  • Clean the exhaust tip – diesel soot builds up fast. Use a chrome polish or stainless steel cleaner monthly.
  • Listen for rattles – if the pipe contacts the frame or driveshaft, realign immediately to prevent wear.
  • Replace gaskets if leaks develop – exhaust leaks hurt performance and alter the sound in a bad way.

Frequently Asked Questions

Will an MBRP turbo-back exhaust make my truck louder?

Yes—significantly louder and deeper. Expect interior cabin noise to increase, especially during acceleration. Highway cruising remains tolerable if you choose a muffled kit.

Do I need a tune after installing a turbo-back exhaust?

Not strictly required, but highly recommended. Deleting emissions equipment without a tune will trigger a check engine light and may harm the engine’s air/fuel ratio. Tuning also lets you maximize performance gains.

How long does installation take?

Most DIYers can complete the job in 4 to 6 hours with basic tools. If bolts are rusted or if you encounter unexpected obstacles, budget a full weekend.

Is an MBRP system compatible with my factory exhaust brake?

Some MBRP kits retain exhaust brake functionality, but you must verify before ordering. Check the product description or call MBRP customer support.

Conclusion

Installing an MBRP Turbo Back Diesel Exhaust is one of the most satisfying upgrades you can make to a diesel pickup. The combination of a rugged, head-turning sound and tangible performance improvements makes it a worthwhile investment. By following this step-by-step guide, using quality tools, and paying attention to alignment, you’ll achieve professional results in your own garage. Whether you’re looking to enhance your daily driver or build a tow rig that announces itself with authority, the MBRP turbo-back system delivers—backed by years of engineering and a name that diesel enthusiasts trust.

For additional diesel exhaust tips, visit Diesel Power Products or check real owner installs on Ford-Trucks.com forums.