Ok, after having grief getting my boost controller to work, I have narrowed it down to it being a boost or exhaust leak.
Im thinking its either from either 1) exhuast i.e manifold to ext wastegate or turbo to manifold or manifold to engine or no. 2) somewhere along the intercooler piping to throttle body.
Basically what it does, is no boost past 15psi with any boost controller turned up to max, and with no boost controller - running it straight of the ext wastegate I only see bout 10psi, when it has a 14psi spring.
My question is is there any way to tell where the leak is from (1 or 2)? Just would like to get a heads up before I start ripping off impossible to get to wastegates.
Cheers in adavanced.