NEW ITEMS

Shopping for someone else but not sure what to give them? Give them the gift of choice with a Quadstar Tuning LLC gift card. Gift cards are delivered by email...

New for 2020! Another Quadstar Exclusive product.  This billet aluminum fuel pickup module will completely replace and upgrade your factory fuel module in the 6.5L turbo diesel truck fuel tank.  Whether you...

A Quadstar Tuning exclusive!  Customized to fit the 1994 and 1995 6.5L diesels with a removable chip in the PCM. This is a plug & play unit that holds up to...

For all 1996 and newer 6.5L Turbo diesel vehicles including trucks, vans, cab-chassis, boats, and anything else with a DS4 pump!  This PCM is a sealed unit and requires re-flashing with a...

Single replacement PROM chip for 1994 and 1995 6.5L Diesel vehicles. After completing an order, we will provide a comprehensive online form for you to fill out with all vehicle...

One-piece oil feed fitting for adapting Holset turbochargers to the 6.5L turbo diesel.  Eliminates the need to adapt the stock brass fitting and includes a properly sized oil restriction to control...

This unique plug and play add-on allows you to split the crankshaft position sensor (CPS) output on 1994+ 6.5L turbo diesel vehicles.  Why would you want to do this? Share...

Another Quadstar exclusive! We originally made these to use around the shop but they worked so well that we want to share them with you! Constructed of heavy-gauge steel, these are built...