well i personally compare directly cfe and iafm+ crankshaft is the same, thus in order to make the iafm+ engine able to handle high boost above 0.9 bar u can just upgrade it with cfe conrod and piston, throw in a racing oil pump and it will handle the boost reliably.
u can search Krypto Motorsports fb
here we have 5 preve manual running daily otr. go to work, fetch family going to holiday and etc.
1. preve manual with, tdo4hl 0.8 bar boost with cps head swap .200whp and 260nm
2. preve manual with gt30 1.0 bar boost, 210whp 300nm.
3. prevr manual with gt28 hybrid turbo 1.3 bar boost. yet to dyno, but previous stock gt28 turbo 0.8bar on dyno show 180whp n 260nm.
4. preve manual with rhf4 turbo .
5. in progress not sure wat turbo
all running aem fic 6 piggyback. number 2 preve already change gb to gen2 manual cos getrag stock not able to handle the power, throw up a small hole on gb casing hahaha.
number 3 in progress of changing to cps gb for better ratio. non of above car have issues with their engine only have issues with the recond china turbo. shaft kaput etc.
starting package for 0.6 bar boost starts at 6.5k, include all piping require until middle section.