Cm2350 miss/pop around 20-25 psi boost

[Aleeex]

Engine is fresh out of the shop after a rebuild. Against my advice this individual decided to use an (after-market) stage 3 head and a (after-garbage) works 67mm VG turbo.


For the love of all good things, do not use parts like these on your rebuilds.



But now he’s chasing his tail trying to figure out what could be causing the miss and pops at 20-25 psi. Any ideas?

https://www.instagram.com/reel/C2fagUqrI...B6YjBleA==


Edit: truck was re-tuned in ga, suposedly by the shop where Rawze did his rebuild. Truck was already demandated before the rebuild.
And fuel mileage is bad. Even for an rgn