I recently got a JJR Bellmouth and have been using an R32 10psi actuator for some time. with the stock Dump going to a 3" frontpipe to a 3" Catco Cat into a 3" Blitz Nur spec Catback, I got 10 psi. with the Bellmouth replacing the stock dump and frontpipe, I get 10psi. Being that I installed an SAFC 2 and got it tuned, my car was on a Dyno for the first time. Boost actually drops off to around 9psi in the higher revs. It's going back next week to fix a timing issue and retune but currently I have 181.8rwkw. Clean your Airflow Meter with CRC MAF Cleaner, drive it and enjoy. Series 2 R33. (Stock Turbo, Apexi pod, Metal Intake, ARC SMIC, 10psi, Bosch 044 pump, 3" turbo back exhaust, Apexi SAFC 2.)