Just like the title says. Which one would yall suggest me getting.

 

More info is needed, what are your plans? They are used for totally different applications. The Interface controls a/f ratio, and can pull timing. A progressive controller allows the hit to come on more slowly.
Robert

 

Im just doing heads and a 100dry shot from harris speed, the sudden impact series. I just want it to be as safe as possible. Thanks

 

they do different things. for a 100 shot you shouldn't need a progressive controller. you could just 2 stage it if you have to.

i just got the dynotune a/f safety and i'm thinking about adding the interface for more insurance.

wideband,injectors and maybe a pump too if you don't have them already.

 

yep i got all that good stuff. im running #42 injectors did that when i had my sts system

 

im running the NOS mini progressive controller and its a bad *** peice.. it has this mini hand held to program it.