[Pt_killa]

The car runs fine off just spring pressure, and to eliminate if its a weak spring, he disconnected the lines to the waste gate and boosted it and held up to 12psi, 3x spring pressure like expected. Also, there are no boost leaks or pre-turbo leaks, so signs point to the tru-boost or connections to top wastegate ports. I've never used a tru-boost, always dealt with manual air regulator so not 100% sure on the internal valve design of the controller and if the internal valve is 1 for 1 with the duty cycle setting (ie 10% duty cycle means the valve is letting through 10% of the air to the top of the wastegate, etc)