My primary turbo spools fine to 10 psi however when the secondary hits it drops to 5 and then goes to 7 then begins to sputter between 7 and 5 psi it does this at WOT.. anyone by chance have a similar problem and were able to solve it? thank you

 

i had the same problem for a while. it's either a vacuum leak or an accuator problem. i stopped caring about mine, because i'm determined to go single VERY soon, i didn't get much help here. basically they just gave me a link to a site that talks about the possible problems. site gave great information, but most of the guys on here are single turbo guru's. i hope this helps.... the actual link is about halfway down.https://www.nopistons.com/forums/index.php?...showtopic=23586