boost only 15 psi . Is that ok with Hks standard wastegate ?

 

Try asking in the single turbo forum.

 

What's the size of the standard? Either way, I don't think it'll work well. You may experience creep*shrugs* but you might not.

 

NO, it won't work. You will get boost creep like a ****

 

You wont get boost creep if you have a boost controller? Or am I wrong?

 

The HKS standard is 40mm WG. This is probably too small to use with a T78. There is a good chance you will get creep. The boost controller really has nothing to do with boost creep. Boost creep is experienced when your WG is wide open and your boost is still climbing. Once the WG is wide open there is nothing else the boost controller can do to control boost.

 

EXACTLY!