Quadstar Tuning will be CLOSED from July 10th to July 26th, 2020. Any emails, messages or orders placed during this time will be answered and processed beginning July 27th. During this time, we will be restructuring to serve you better and some product listings may change. We'll be coming back strong with multiple new product releases. As always, thank you for your support!!!

6.5L Turbo Diesel Handbook

Quadstar's Master Maintenance List

Posted by John Faddis on Nov 01, 2019

For new and returning owners. A peek into our brain at the checklist we follow for maintaining a healthy rig.

6.5L EFI Diagnostic Scanning for DIY Owners

Posted by John Faddis on Jan 13, 2019

Scan live diagnostic data from your OBDII 6.5L turbo diesel vehicle using our comprehensive how-to article on adding extended PIDs into the Torque app for Android devices.

Cooling System Upgrades

Posted by John Faddis on May 02, 2018

How to keep your 6.5L Diesel cool with a mix of knowledge and upgraded parts!