Swapped sensor no change, fiddled more with the boost settings, in third gear i'm pulling a constant 10psi then in 4th it shoots to 14/15psi with a spike to nearly 20...It's got me beat where the leak is...
Gonna have to do the pressure test on the system next, only thing I haven't touched is the intercooler piping so that will be first port of call during the week.
