with one boost controller (homemade. brass valve) i get full boost.. then, when vtec kicks in (coincidence, i'm sure), it drops from my 13psi to 8psi (spring)
with another boost controller (air pressure regulator) it reaches 13psi, but not 'till 8k rpm.

my entire setup is put together with T-Clamps.. so i can't imagine it leaking... any ideas?? we're looking to pressurize the system with a pvc cap/leakdown tester to look for leaks..

has anyone had this problem and able to confirm my suspicions?