First Gen Turbo Upgrade | Best Turbo For 1st Gen Cummins 1988-93 12V

DPS First Gen Turbo Upgrade For Dodge Cummins 5.9 12V

The Best Turbo For 1st Gen Cummins, Period.

Fits years 1988 1989 1990 1991 1992 1993

DPS First Gen Turbo Upgrade is the best turbo For 1st gen Cummins trucks. are an excellent choice for towing, daily driving or racing. Our S300 based performance turbos for 1st gen Cummins are the best turbo for 1st gen Dodge Cummins 12V. This 1 gen cummins turbo upgrade will not disappoint.

First Gen Turbo Upgrade Choices

Stage 1.5| S362/68/.70 - 450 Max HP
Stage 2   | S362/71/.70 - 460 Max HP
Stage 3   | S363/68/.70 - 500 Max HP
Stage 3.5| S363/68/.70 - 500 Max HP -Ball Bearing
Stage 4   | S363/73/.80 - 530 Max HP
Stage 4.5| S363/73/.80 - 530 Max HP -Ball Bearing
Stage 5   | S364/71/.70 - 530 Max HP
Stage 7   | S366/73/.80 - 650 Max HP
Stage 7.5| S366/73/.80 - 650 Max HP -Ball Bearing
Stage 9   | S369/73/.80 - 775 Max HP
Stage 9.5| S369/73/.80 - 775 Max HP -Ball Bearing

*Diesel Power Source Turbonator® VGT/VNT Exhaust Housing Upgrade Options

3 Stage Mechanical Actuator VGT

• Improves spool-up by 200-300 RPM's
• Improves turbo performance and output
• Holds the veins better at every position throughout the RPM range

Electronic VGT with Exhaust Brake

• Improves spool-up by 200-300 RPM's
• Improves turbo performance and output
• Adds Exhaust Brake to Turbo
• Exhaust Braking Function with the Turbonator® VGT - will always increase exhaust pressure while braking, however, Diesel Power Source does NOT guarantee a specific Exhaust Braking force as every truck and application will be different. We mainly recommend the exhaust brake (hybrid) option for trucks built in 2003 or after.

Features & Benefits of 1st gen turbocharger:

• This first-gen Cummins DPS Race Compressor Housing (flows 9% more)
• Directly bolts onto 1988-1993 Dodge Cummins 5.9L (4" downpipe required)
• 6 pad 360° Thrust Bearing
• Wastegated turbine Housing (Adjustable)
• Optional Turbonator® VGT Upgrade
• Polished Compressor Housing
• Horsepower Gains typically be between 10%-18% rwhp on the first gen cummins, depending on truck modifications
• Lower EGT's (Exhaust Temps) by 10%-15%
• Can be used as a direct factory replacement turbo
• Applications for Towing, Racing, Daily Driving, Fuel Mileage, Lower EGT's
• Optional Billet Wheel SXE Upgrade Available
• Fits First Gen Intercooler, and Non-inter-cooled trucks
• Includes DPS exclusive 3-stage actuator (only available with VGT Turbonator exhaust housing upgrade)

What makes DPS the best turbo for 1st gen Cummins 12V. With so many wheel choices, the 360 degree thrust bearing, and the option to make your 1st Gen turbo have a Turbonator VGT, with a built-in exhaust brake on a 1st Gen truck. DPS first-gen turbo upgrade is the most advanced turbo you can put on your 12V Dodge Cummins.

** Turbos will spool differently in every truck. Injector size, timing, camshaft, and other mods all affect the spool-up, the above table is the typical spool-up RPM's.
The DPS turbo for 5.9 Cummins is based on the S300 turbo platform with substantial modifications. Our innovative in-house engineering with CFD (computational fluid dynamics) capabilities have greatly improved the performance of the DPS Turbos for your 1 gen Cummins

If using our turbo in compounds on the first-gen Cummins, please let us know so we can configure the wastegate with a spring gate to prevent damage to your 1 gen Cummins.

**PLEASE NOTE: IF ORDERING FOR FOR COMPOUNDS, PLEASE LET US KNOW, WE MUST CHANGE THE WASTEGATE TO A SPRING GATE SO THE ADDITIONAL PRESSURE DOESN'T DAMAGE THE WASTEGATE BY OPENING IT TOO FAR**