1981 ECM Prom or Hypertech Power Chip??

[Tommy Almond]

How many of you with 1981, still all ECM parts are running the Hypertech Power Chip in your ECM in place of the original stock prom and are you having any issues with the power chip?

 

[Sensei]

I use the Hypertech Thermomaster Power Chip with no problems. Don't expect huge performance gains, but they work well enough.

God bless, Sensei

 

[LannyL81]

when I got my 81 the PROM was bad...was not able to find a GM replacement and had to go with the Hypertech. It works.