Would it be good to get a boost controller on a 06 wrx with a stock turbo? Is it true its already to full boost?

 

It's not at full boost but you aren't going to get some crazy hp from an extra 1-2 psi. Buy an accessport instead.

 

get a tbe and a tune...you'll be glad ya did!

 

turboback and an accessport is a more reliable route to take

 

a cobb ap uses your stock boost solenoid to controll boost. dont waste money on a boost controller that will probably cause your engine to blow without engine management. with the ap you will safely be able to raise your boost.