Mk7.5 golf r turbo

[Omari1996]

Hey guys I currently have a mk7.5 Golf R and am on a APR Stage 2.5. from my understanding the IS38 turbo (stock turbo) can only handle up to 28PSI before issues can start to occur. I have an APR boost tap and the gauge is saying that i run 28 PSI on full throttle. I am wanting to get the piggy back JB4 which i have for my Kia Stinger to mess around with the E mixture fuels. Now i know with the higher maps you go you start increasing the Boost/PSI so by doing so will I end up messing up my stock turbo? Will i need a big turbo? or a aftermarket tweaked with IS38? Any thoughts or solutions? is anyone currently running a flashed ecu and a piggyback?