Description
DPS | Turbos for 12v Cummins 1989 – 1998
Genuine DPS First Gen Turbo Upgrade For 1989-1998 12V Cummins 1st & 2nd Gen
Fits 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998
DIRECT BOLT-ON 1989-1998 TRUCKS – 4″ DOWNPIPE REQUIRED
DPS turbos are built on the respected S300 platform but go far beyond a simple parts upgrade. Forged milled wheels improve strength-to-weight ratio, while a 360° thrust bearing protects against high boost stress.
A larger shaft and multiple wheel options allow you to tailor the turbo to your setup without sacrificing durability.
The real advantage lies in their housings. Every compressor and turbine housing is engineered in-house using CFD modeling to shape airflow paths for maximum efficiency.
That precision design produces:
- Faster spool response
- Lower drive pressure
- Improved high-RPM airflow
- Reduced turbulence
The turbo isn’t fighting itself. It’s flowing.
- Sold standard with DPS wastegated exhaust housing.
Turbonator® VGT Upgrade Available, with exhaust braking capabilities.
- (Turbonator VGT Improves Spool-up by approximately 200-300 RPM’s. See below for details)
DPS Ball Bearing upgrades improve spool-up by 150-200 RPM’s. Ball Bearing and VGT upgrades can be done together for massive improvements in spool-up and responsiveness.
Turbonator® VGT Exhaust Housing Upgrade for your 12V
- Improves spool-up by 200-300 RPM’s.
- Allows exhaust braking on all truck years.
- Improves low-end power and torque.
- Improves engine performance and output.
- More responsive and drivable.
- Cleans up smoke.
- Improves fuel mileage.
- Allows a larger turbo to be used because of the quick spool-up.
Options are with or without exhaust braking.
The Turbonator® VGT Exhaust housing comes completely self contained, and works amazing on 12 Valve Cummins engines. It also can be upgraded to the exhaust braking feature on 12V engines as well.
Turbine Housing Info: Most DPS Turbos come standard with a T3 Wastegated exhaust housing, which can be upgraded to the Turbonator VGT/INT Housing. DPS Wastegated housings flow approximately 22 lbs/min through the wastegate when it is open. This is the equivalent of having one size larger turbine housing at wide open throttle, with the spool-up and drivability of a smaller exhaust housing when accelerating. The best of both worlds! On 5.9 Cummins engines their testing has shown the our T3, wastegated, exhaust housings perform superior in all categories compared to T4 housings non-wastegated housings. DPS standard divided scroll turbine housings create boost nearly 100-200 RPM faster and flow equal to or superior to the standard T4 housings at WOT. DPS also have their Turbonator VGT housing available as an upgrade on most of our turbos, which improve spool-up another 200-300 RPM faster.
Why DPS Compressor Housing are better:
- Ported shroud inlet.
- 5% increased airflow compared to standard Borg Housing
DPS manufactures (designs, casts and machines) nearly all of their own compressor and exhaust housings. Designed with CFD (Computational Fluid Dynamics) software for improved flow compared to anything their competitors have. Their engineer staff knows how their products flow and perform, they don’t just guess.
