hello,
im looking at buying a powerfc for my fd and the seller says the fuel pump driver circuit is non-operational as it was used in a race car and and wasnt neeeded.
what id like to know is, is this a reversible "procedure"?

thanks

 

If it was not needed, you would not need to disable it which would require cutting/removing components. Thus I suspect it is burnt out.
You can look at the FSM to see how the stock fuel pump control works.

Do not by the PFC.