Anone looking to tune their Turbo should check out RSP MOTORSPORTS in Komoka Ontario. Just 15 minutes west of London this shop is equipped with state of the art Dyno Tuning equipment but more importantly the owner operators are true Porshe fanatics.
I just recently purchased a 2001 996 Turbo although I was very impressed with it’s performance Renauto the owner of RSP mentioned that thecae would most likely benefit from a Dyno tuning session. Well let me tell you it came back as a differant car. HP gain from 415 to 477 and torque gain of over 100 ft lbs all within a very usable RPM range. It is like they installed a new engine.
If you want to get the most out of your turbo I highly recommend RSP Motorsports.