Hi, I have an s5 motor in my 79 rx7. I have a t67 turbo and 1600cc secondaries and 720cc primaries. Can an rtek 2 and a safc neo on top handle these injectors?

Thank you

 

It may work but the transition will suck and it may hesitate rolling into boost. I'd recommend looking at a different injector setup

 

would it be better if I used a 720, 1300 combination?

 

You might want to check out my thread....

https://www.rx7club.com/rtek-forum-168/2-1-fjo-injector-driver-950-1000%3Dwin-871863/

I went with 950/1000 for my set-up and it has worked well (albeit with a few adjustments). While i've gone with injectors I had sitting around, you could essentially add larger secondary injectors due to your ability to add larger primaries.

~M