Sequential and none sequential on a FD....
 

Well the other day i talked to this guy that had a 93 rx7 and i asked him if it was a twin or single; and said its still a twin turbo but its not a sequential setup so i was wondering whats the difference from being a sequential setup and one that is not sequential but is stil twin?

An answer to your question can be found in the very first thread stickied in this forum :)
https://www.rx7club.com/new-member-rx-7-technical-256/frequently-asked-questions-3rd-generation-rx-7-1992-2002-faq-fd-782404/

Scroll down to the N section.

thanks i read but was stil wondering since its NS, does that mean the boost pattern stays in the same number of boost unlike the Sequential where it does the 10 8 10 pattern?

Nope. NS means that both turbos are working together. Therefore no 8PSI transition between the first turbo running 10 PSI and the second turbo running 10 PSI. Both turbos run together, similar to a single turbo, so boost comes in around 4000 RPM at 10 PSI, or whatever it is set to, with very little boost below that.

Clear?