I can map the car with whatever characteristic you prefer. Generally speaking, to maximise midrange torque and preserve the turbo at high rpm, when running a T3 and greens, I run a midrange boost of around 25psi, before backing the boost off to around 18psi at the limiter.
On a T34 and greens again the same applies, but usally around 28psi midrange backing off to around 21psi at the limiter. Of course you can have a flat boost curve of around 21 psi if you prefer.

For your info, the boost is controlled by accurate mapping of the amal valve. No matter what you go for all cars will drive superb and be super smooth, compared to a std chip etc.

Hope that helps.