The generic looking tag on the cover say RE_AMEMIYA. The prom chip has been replaced (the solder joints are the give away) and it says "The Ultimate In Speed And Beauty BUR STAR CHIP" on the chip. What is this thing?

 

I found a BBR Star*Chip for a non-turbo Rx-7.
Here & here.

I certainly wouldn't run my engine on it- imho.

 

id be carefull if you are planing on runing it. i had one from panspeed, same sort of thing. when they make them they are tuned for the car they are going on. i ended up selling it, telling who ever bought it they would need to have they same sort of mods i did. the guy that bought it blow his car up from it.

 

I'm not going to run it. Was going to offer it for sale and wanted to know what it was for sure. Customer left it with me when he went PFC. I'll probably end up letting it sit on the shelf since it sounds sketchy. Thanks guys!