C15 mxs twin turbo only reaching 10psi max?

What's up guys, I'm having a bit of a problem and I'm hoping one of yall can point me in the right direction here, the truck is a 2005 pete, with an mxs twin turbo engine. At first we had no boost, (waste gate malfunction, and leaks) now that the leaks have been repaired and new high pressure turbo installed, we only get Max 10 psi boost, I've checked all the boots, CAC, precooler, checked turbos (new one too just in case) for broken shafts or bent turbine fins, the fuel pressure at idle sits at 64 and under load 85, no diagnostic codes, only fault code that was registered before was speed sensor fault, but has since been replaced and is working, anything will help, thanks!

 

Yes sir I do

 

Turned out to be exhaust restriction, good call, getting up to 40 psi boost now.