NEW ITEMS

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...

This custom S plate is used to block off the oil ports on a 6.5L center turbo style engine block when the ports are not needed. Fits GM, GEP, IHI...

Our solution to replacing the factory metal return lines on 6.2 and 6.5L diesel engines.  This kit is designed to replace both metal lines on the engine; the one across...

Drop-In alternator upgrades for your 6.5L turbo diesel. No modifications required. Multiple fitment options and amperage ratings are available. Please choose carefully.   1993-1995+ Key features: 6 Groove Serpentine Pulley...

You've landed at the right spot if you are looking for an OBDII scan tool that will work with your 1996 or newer 6.5L Turbo diesel.  We put the leg...

New for 2020! A 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...

For all computer controlled 6.5L turbo diesels, this ECT fooler allows you so quickly and easily perform timing adjustments without having to fully warm up the motor. Simply disconnect the...

Our modern solution to an age old problem!  Application specific, this setup is designed to handle the high-flow requirements of turbo diesel engines that have unavoidable blow-by.  Alternative universal solutions...

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...