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Bully Dog Big Rig Stage 2 Performance Turbo & Exhaust Manifold Combo for 2000-2003 Signature Cummins ISX

Part# 56800,85104
$4,400.00 Now $4,000.00
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AVAILABILITY: Ships from Manufacturer


Not Available to Ship to California


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Product Description

Bully Dog Big Rig Stage 2 Turbo Charger & Exhaust Manifold Combo Kit

With a focus on reliability Bully Dog Big Rig offers their Stage 2 Turbo Charger and Exhaust Manifold Combo kit for 2000-2003 Signature 600 Cummins ISX engines.

First, The Exhaust Manifold

Bully Dog Big Rig means business with their new premium ceramic coated exhaust manifolds — the fastest flowing exhaust manifolds in the industry. They have been designed to provide quicker turbo spool, higher power output and more fuel economy for class 8 engines. Bully Dog’s engineering team spent a considerable amount of time analyzing the possible flow layouts for each manifold using state of the art computer aided design software. Each manifold was simulated and prototyped numerous times searching for the most efficient design. The two primary goals were to maximize the airflow and to eliminate any & all known failure points in the existing stock manifold. The final result is not only impressive, it looks great and is fine-tuned for engine performance. This exhaust manifold features a T6 turbo flange making it compatible with Bully Dog’s impressive turbo that is also included in this kit.

Key Features Of Exhaust Manifold

  • 18% More Airflow Over Stock
  • Ported to Eliminate Any Flow Interference
  • Ceramic Coated Finish which Cools EGT’s by 100°              
  • 0.2 to 0.3 MPG Improvement
  • Radiating Temperatures 300° Cooler
  • Improved Fuel Economy Over Stock
  • An Additional 20 to 30 HP to the Rear Wheels
  • Two Year Warranty
  • Includes Oil Supply Line, Oil Return Line, Turbo Bolts, Head Bolts & Gaskets
  • Note: Replaces Stock Manifold part #115-0199.



How did Bully Dog increase airflow? First, the sharp corners common on the stock manifolds were eliminated along with other edge related improvements. More airflow equals greater turbo response & more horsepower to the rear wheels. Independent testing on a flow bench shows 18% greater airflow over stock manifolds. Next, the Big Rig Engineers at Bully Dog created a better design. Leakage — common in stock manifolds — is prevented by using a tightened, thicker, three piece, metal-alloy system. The reinforced metal alloy allows all 3 pieces to expand and contract at the same rate — so as the engine heats up & cools down, the stress to the joints is greatly reduced over the life of the manifold.

Finally, each manifold is hand ported and polished when it comes from the foundry to prevent metal burrs and the interfering turbulence they cause. The ceramic coating — both inside & out — ensures the engine heat is utilized to spin the turbo rather than be absorbed by the manifold’s metal alloy. We all know the greater the turbo response, the more efficient the engine. Not only that, but the ceramic coating used in these exhaust systems reduces the temperatures radiating off the manifold by 300° & the EGT’s by 80° to 100° !   Better Design & Better Looking — Bully Dog Big Rig means Business!

On To The Turbo

Engineered & Manufactured with Bully Dog’s renowned quality, this 400-750HP Performance Turbo features improved horsepower and fuel economy as well as lower EGTs. With a quicker spool up and better casting craftsmanship than OEM turbos — the Big Rig Stage 2 is the perfect OEM replacement or performance upgrade for higher horsepower class 8 vehicles.

The only difference between Bully Dog’s Stage 1 Combo and Stage 2 Combo is the turbo’s exhaust housing. The stage 1 housing is a 1.32 AR and the stage 2 is a 1.45 AR. The larger housing on the stage 2 allows the same volume of air but it will spin more slowly. It will run just as well as the stage 1 but with lower boost. If you have a higher horsepower rig, the larger housing of the Stage 2 will help you prevent over spinning the turbo.

Key Features Of Stage 2 Turbo Charger

  • 6% — 12% More Fuel Economy
  • 6 to 10 PSI Boost Increase Over Stock
  • Adds 30 to 40 Horsepower
  • Triple Balanced – up to 180,000 RPM
  • Lower Exhaust Gas Temperatures
  • Bolts Up To Factory Locations
  • No Core Charge
  • 1.45 AR Exhaust Housing
  • 78mm Billet Aluminum Compressor Wheel
  • One Year Warranty & Industry Leading Support



What makes a Bully Dog Turbo better?

  • Better Quality: Bully Dog turbo chargers are manufactured with copper thrust washers and journal bearings. Copper thrust washers are more resilient because they are machined out of round stock, as opposed to being cast out of pot metal.
  • Better Manufacturing Process: In the manufacturing process, the Bully Dog turbo charger is triple balanced up to 180,000 RPM to ensure maximum reliability.
  • Simpler Buying Process: Bully Dog doesn’t require a core charge on turbo chargers; eliminate the need to pay extra up front and then shipping old turbos back and forth and waiting to see if you get your core charge back.
  • First Class Warranty: Our Bully Dog turbo include a one-year warranty.
  • New Features: New Billet Wheel & Improved Clamps.

A vitally important component to a vehicle’s overall performance, the turbo charger affects power output, fuel economy & throttle response. The turbo charger that’s running in your vehicle is a factor in its efficiency — if it’s less than the best, then its efficiency is not optimal — and that affects your experience on the road, especially during long hauls. If the throttle isn’t responding effectively, you aren’t getting that extra power when it’s needed. What’s more is you’re wasting fuel — and that’s money out of your pocket. So choosing the best turbo charger for your rig is nothing short of crucial. Bully Dog Big Rig’s Stage 2 Turbo is proven on the road, both in performance and longevity. It typically costs less than an OEM replacement — AND there’s no hassle of a CORE charge.