Anyone familiar with this Japanese exhaust
 

https://cimg5.ibsrv.net/gimg/www.rx7...ab70652226.jpg
it's hard to tell because of the scrape marks but does anyone know the brand.

JASMA is like a Japanese stamp/certification like California CARB. It just means the exhaust meets legal Japanese specs for a car so you can run it without getting in trouble. That is not your exhaust brand name.

Post larger photos of the unit and maybe we can figure it out.

I found out what kind its is. It's a apexi ps revolution