Twins | Cummins 475 Twin Turbo Kit Setup | The Best Spool Up
Fits: 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1998.5 1999 2000 2001 2002 2003 2004 2005 2006 2007
Looking for A Bolt On Cummins 475 Twin Turbo Kit Setup, To Lower EGT's And Tow Amazing. DPS Twin Turbos Spool Up The Best In The Industry. Customers Say Once Having DPS Cummins Twin Turbo Setups They Could Never Go Back To A Single Turbo.
Cummins Twin Turbo Setups:
Stage 2.5 Max 625hp S362/68/.70 over S475
Stage 3 Max 650hp S362/68/.70 over S480
Stage 3.5 Max 625hp S362/68/.70 Ball Bearing over S475
Stage 4 Max 650hp S363/68/.70 over S475
Stage 4B Max 675hp S363/68/.70 over S480
Stage 4.5 Max 650hp S363/68/.70 Ball Bearing over S475
Stage 4.5B Max 675hp S363/68/.70 Ball Bearing over S480
Stage 5 Max 700hp S363/73/.80 over S475
Stage 5.5 Max 700hp S363/73/.80 Ball Bearing over S475
Stage 6 Max 750hp S363/73/.80 over S480
Stage 6.5 Max 750hp S363/73/.80 Ball Bearing over S480
Stage 8 Max 1100hp S366/73/.80 over S480
Stage 8.5 Max 1100hp S366/73/.80 Ball Bearing over S480
Excellent factory-like fit. bolt-on application, no cutting or fabrication needed.
Wastegated, allowing boost adjustment
Performance 3-Piece Exhaust Manifold included
Super high flow air filter
Flexible Steel braided oil supply lines
Stainless oil drain lines
Lower EGT's by 250-450 degrees
Increase horsepower by 22% to 25% depending on your turbo selection.
The best twin turbo setup available.
The best twin turbo spool up in the industry
Why DPS Cummins Twin Turbo Setups Work So Well:
- A lot more cool air enters the cylinders, because the dual staged compressors work together within their most efficient zones. The boost air is typically over 100 cooler per pressure made than from a single turbo.
- The air entering the cylinder is at higher pressure, bringing the boost pressure and exhaust drive pressures near a 1:1 ratio. The intake stroke can actually produce power.
- There are additional air molecules in the cylinder which do not get involved in combustion which carry the heat out of the cylinder (similar to how a jet engine is cooler).
- It has more complete combustion in the cylinders because there’s more air in the cylinder to burn all of the fuel.
Head Studs Recommended For Cummins 475 Twin Turbo Setups:
1988-2002 engines over 48 psi boost, and fire rings for over 55 psi boost
2003-2007 engines over 55 psi boost, and fire rings for over 65 psi boost
Our Compound Turbo systems are all capable of over more than 55 psi, but are adjustable depending on truck.
Have a Fummins or Chummins Conversion? Click this link for our Fummins, Chummins kits: DPS Fummins Compound Kits
Looking for an Add-a-Turbo Stocker Kit? We have those too!
Kits are complete, they include:
Both s300 and s475 turbos (except stocker)
- Exhaust Manifold
- All air, exhaust and oil tubing
- Air Intake and filter
- Downpipe or Adapter to fit factory exhaust (depending on truck)
***On 2nd Gen trucks with automatic transmission. The trans oil heat exchanger on the side of the engine block will need to be removed, bypassed or relocated to the frame. We sell the relocation kits for $149, select in the drop down.
***Only 2002 and older kits come with a downpipe, 2003 and newer kits bolt right to the factory exhaust.
***These kits do NOT have a CARB exemption. However our exhaust manifolds do.
