I got MBCset to 10PSI ... and it does boost to 10psi ... but a speck of a second later it creeps down do 9-8 psi ... Intercooler presure drop due to non-eeficiency or slight boost leak? ... got new clamps and inspected hoses all around and would exlude [rather] boost leak from hoses ... still a possibility ... AAnd no it doesn't drop any further than 8psi.