mine has a stg3 ahmed bayjoo chip fitted, along with a genuine rs500 intercooler, a new t35 hybrid turbo and a -34 actuator, it's running 22 psi and it rip's ya head off when it comes on full boost.

however everyone has different opinions on which chip is best etc, I am happy with mine, but if I was keeping the car then I would get a live map done as then it is setup to run on your car only which means it will be setup 100% spot on.