My power FC just arrived from japan. I knew the instructions would be in Japanese. I just didn't know I'd have such a hard time getting the manual in English. I don't know where to find contact info for AP Engineering either.

Can anyone be of assistance?

 

Maybe this will help you.

http://www.jimagu.com/tinou/pfc/FC-Edit-Pro-Manual.pdf

 

this is all FDstuff though

 

Did you click on the link because I know how to read and the title of that pdf is
Efini ( Mazda ) FD3S RX7 Gen 3.

 

DOH!
You did not specify what type of vehicle you have, and you are in a FC/FD forum.

DAPDAS!

 

actually the title of the thread says "S5 Power FC Instruction".... just pointing out.