Charge pressure control will not even be close.

The PID will have to be retuned.

Depending on what K04 tune it is, absolutely. If it was tuned to ride the map the ecu won't know it's overboosting. The SRM's running K04 level wastegate duty cycle will be 30+ psi.

you can use a manual boost controller in parallel to control over boost... its not the right way but its a cheap effective way to avoid a retune if thats what your trying to do by the sound of it.

yes sir

34psi too be precis.
A friend of mine did it, and at first run he blew his clutch.
Than the tuner here in Sweden did something that is absolutely Nono.
He reached down and turned on the wg screws a couple of times, and fucked it all upp.
The car is impossible too tune now.

Since the K24/26 hybrid turbos are larger machines, running on K-04 boost maps, should result in about the same boost pressure as the K-04s with slower spool up response time, not excessive boost. The boost controller is a 3 mode PID controller, (Proportional/Integral/Derivative) with actual boost pressure feedback for comparison to the requested boost, for offset/rate/reset response to drive the N75 control pressure output value accordingly. the N75 control voltage PWM duty cycle is adjusted by the PID controller output to achieve the necessary boost pressure and associated torque development.  Therefore I don't believe there is any risk of excessive boost pressure or out of control boost regulation. With torque demand base engine management two main factors are used as inputs for boost pressure control, the MAF meter output is used for engine load determination, and the MAP sensor output is used for boost pressure measurement. Boost pressure is one of the main torque control variables used by the ECU to match torque achievement with the sum of the torque demands at any instant. If the ECU uses drive by wire throttle, the engine management is based on torque demand. Mechanical  throttle control uses a different boost control model in the ECU software, but is also a PID controller  configured in software. In the specific boost pressure control  for mechanical throttle control, the larger turbos running with  K-04 tune, would most likely not boost as much as the K-04s due to the larger turbine and reduced spool up response. Given enough time, the larger turbos should develop about the same boost as the K-04s. I don't know of any way the larger K-24 based turbos could accelerate out of control, developing excess boost pressure when controlled by the K-04 tune, with everything operating normally.