Ans stage4 d chip, does anyone know anything about it?

[1987 Six Shooter]

Any info would be greatly appreciated.

 

[rag231]

I have a Precision 4D4D chip from the same era. I wonder if it's the same chip and they relabled it?

 

[1987 Six Shooter]

I dont know. What are some of the hipo upgrades that yours was created for?