When using a smc can you use a set of rc 310cc injectors also is the hondata a better choice because i am running a fmu and I am always running rich it also makes a hammering sound when I start up first thing in the mrnings

 

Hondata is definately a better choice. Its a stand alone. I think the smc only works effectively with 440/450's.

 

and 550cc

 

can you use Rc 450cc so you dont have to use resistors

 

Here you go, the link below should help with your SMC questions:

https://honda-tech.com/zerothread?id=310021

Yes, you can use saturated, high impedence, RC440cc injectors so you don't have to use a resistor pack.