? abought what ECU will fit me best
 

I currentally have: DP MP stock catback stock intake mod, rats nest completeley removed so no emisions crap at all, and full non-sequential twins, wich I did port the wastegate, stock ECU

? with a power fc if I bought used I can't just put it in and go, with a brand new one do I half to get it dynoed?

How abought a pettit ECU can I slap a new one in or even a used one?

I am new to this computer stuff so help me out here what is the best way to go abought this. Planning on going single but not for a year or so.Any help on this subject would be great, and yes I can search but get kind of lost in some of the lingo if ya know what I mean.

If you get a PFC now, you could just run 10-11 psi on the default map and be fine. You will need a PFC to run the single turbo so no point in getting a Pettit.

so saying go for apexi power fc and what if it is used won't it still be set to previous owner

so saying go for apexi power fc and what if it is used won't it still be set to previous owner
sorry to bug but want to do this rite

Well, searching would be good.....the PFC can just be reset to the default map and settings. I suggest you spend some time reading about it. Otherwise, just call up a shop and let them do things for you.