I'm having a few issues with my AMK LCR per stage two map. I've got stage two hard wear fitting and I'm booked in for a remap in two weeks. The problem I'm having is boost is spiking to 25psi and settling to 20psi on the standard map. I've un plugged the N75 and it boosts to 8psi but with WOT past 4000 rpm boost slowly builds to 18psi. I'm thinking its the actuator but have I over looked any thing.
The fault codes I'm getting at present are
17956 N75 open
17705 Pressure drop between turbo and throttle valve
17545 fuel trim: bank one system to rich.
Any help would be much appreciated.