Hi mate what manegment you running 'OFAB' or 'OFAC'? If you not too sure then you'll have to have a look under the dash to see what it says on the ecu or even easier you can tell by looking at the map sensor

The problem sounds like your overboosting thats why the car is shacking (is it jerking back on high boost??) and you need a chip

The rough idle could be due to it running rich etc and needs a setup

But give us the spec first and managment type and we'll take if from there

Good Luck