I think REW is for Rotary Engine twin turbo (notice the symmetry of the “W”, two V’s}.  All FD’s (‘93+ car model) were equipped with the REW, I think.  Also pretty sure the turbo series IV (87’-92)’ were single turbo’s only.

 

Todd

 

 

 

But what does REW stand for? (The R, the E, the W??)