Quadstar Tuning LLC

6.5L OBD1 chips are back in stock 🪄. Switch On the Fly are coming next!

Just over here actually making the parts we sell! Appreciate you all 😘

Lots of backorders will be shipped out this week yet!

If you're waiting on a plenum, thank you for your patience! The delay is coming to an end and we are cranking them out as fast as we can! Feel free to reach out with any specific questions.

Our new revision of OBDI tunes will be available in the next few days. YES, we are also working on more Switch On The Fly OBDI tuners - ETA a few weeks yet. It's a process to keep this stuff alive with chips and parts being obsoleted and not cross referencing directly to something more modern.

The PowerMaster starter is one of the best basic upgrades you can do to these engines. As long as you apply common sense to the installation by using the correct hardware, support bracket, a flex plate that isn't chewed up and good wiring. Have to remember how old some of these rigs are and apply TLC as needed.

Australian Suburbans are cool by default since they got center mount turbochargers. One is about to get even better with a new fully equipped P400 though!

Some customers make it easy and just order 1 of everything so we can play crate Tetris 💪

If your name is on the list and you submitted your spec sheet, your tune should be ready tonight! 📦☑️