Quadstar Tuning LLC

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Quadstar Tuning LLC Quadstar Tuning LLC is an automotive parts dealer specializing in the 6.5L turbo diesel platform

DS pump for sale. $750. Don't lowball me....I know what I got. Just splice a few wires and you'll be good to go!
10/21/2026

DS pump for sale. $750. Don't lowball me....I know what I got. Just splice a few wires and you'll be good to go!

Sneak peek of 2 new products that are in final testing stages... #1 is plug and play standalone transmission control for...
10/18/2026

Sneak peek of 2 new products that are in final testing stages...

#1 is plug and play standalone transmission control for DS4 to DB2 swap trucks. So you can just swap the tune and pump. No expensive aftermarket modules or wiring to add.

#2 is Military DB2 throttle shaft to civilian TPS sensor adapter kit.

We WANT your cores!We think we've finally streamlined this process enough to release it so please check it out if you ha...
10/07/2026

We WANT your cores!

We think we've finally streamlined this process enough to release it so please check it out if you have pumps, injectors, and PCMs sitting around.

Values:
($75) DB2831 style 6.5L DB2 injection pump
This does NOT include 6.2L DB2829 pumps

($150) DS4 6.5L Injection Pump

($40 Set of 8) 6.5L Injectors
Bosch, Delphi or Stanadyne branded ONLY
Short body, fine thread, turbo or non-turbo

($125) #16216588 OBDII PCM 1996-02

Link is in the comments!

It would have been nice to have a Facebook support group to ask "How do you fix a 1980s Hartridge digital flow analyzer ...
10/04/2026

It would have been nice to have a Facebook support group to ask "How do you fix a 1980s Hartridge digital flow analyzer and replace the CRT monitor with a LCD".

We didn't even know what the display was supposed to render when we started 🫪

10 months later, here at are! Time to install the test injectors this week.

It was fun to reverse engineer some more of the old code again for this. We were also able to refine soft vs hard rev li...
09/19/2026

It was fun to reverse engineer some more of the old code again for this. We were also able to refine soft vs hard rev limiters during this process and be able to offer more options there.

09/14/2026

Customer states "The PMD won't even start the truck". Quadstar says... It's fine. What do you think we should do?

Lots of restocks this week! Turbo downpipes back from surface grinding, water pumps, Cometic gaskets, engine wire harnes...
09/12/2026

Lots of restocks this week! Turbo downpipes back from surface grinding, water pumps, Cometic gaskets, engine wire harnesses. More coming soon!

Time for a shop garage sale! See items in the comments that we'll be adding throughout the day. Comment on the items and...
09/03/2026

Time for a shop garage sale! See items in the comments that we'll be adding throughout the day.

Comment on the items and we'll invoice first come first serve.

Another BEAST DS4 hot off the press! We let them sing at 1500 Pump RPM (3000 engine RPM) for at least 30 minutes to mak...
09/02/2026

Another BEAST DS4 hot off the press! We let them sing at 1500 Pump RPM (3000 engine RPM) for at least 30 minutes to make sure they are ready to rock and roll.

Apparently we had a few tunes to do!
08/25/2026

Apparently we had a few tunes to do!

Address

101 Dinnerbell Road Ste 2
Butler, PA
16002

Telephone

+12672097019

Website

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