he wants to know how much psi he can run off his fully built D16 with 8:5:1 pistons and eagle rods?

 

As much as tuning allows him to...built internals dont mean a thing if youre detonating, they just prolong the life of your engine before it finally gives.

Tune it well and you can run alot of boost on a built engine.

 

he wants to run 30 psi

 

hummm.... 30 huh y not like 60 - 65.... lol i think 30 is pushing it