im building an lsvtec b18b block with a gsr head an i wanna go turbo.
can i use my ls pistions out of my ls block ? An what would be the best
ecu to use for the build

 

If you can afford it, I would use stronger aftermarket rods and pistons.

As for an ecu choice, I would suggest doing some research into the different types and brands that are out there. There really isn't a "best" ecu for any given application. Your budget will play a big factor into what system you will get. Also, who will be tuning your motor? Choosing a system that you or your tuner is most comfortable working with should be a big consideration in choosing what system you pick.

 

i agree! find out who will be tuning ur car and what system he is most comfortable with ex.hondata, crome, aem etc.. also if this is a budget build u should be ok with the stock pistons. i would recomend using some arp fasteners like rod bolts and headstuds. what turbo setup are u using??