After suffering misfires new plugs installed and gave map 4 a test. Ran really well. Issue being boost failsafe was triggered at 30psi 2psi above 28psi target
No long crank
Only happened when I removed engine cover to top up oil. Idled higher rpms then rough restarted car. Now won't go above 3k rpm without bucking and spluttering. Shuts cylinders down and get eml. Cancel codes on jb4 normal service resumes try do another pull and same again