when you upgrade your secondary injectors to 1600 you need a custom fuel rail, can you also keep your primarys or do they need to be upgraded also soon after. i dont have the turbo kit yet but i want the gt3540, just wondering cause i wanted to know. what else would i need for fuel upgrades to handle 12-15psi, on a ported engine. or is the secondary injectors being 1600cc enough?

 

http://www.3rdgenrx7.com/keithsrails.htm