OK so just got my car back after having to replace my balance shaft $1150 fix also replaced the waste gate seals/gaskets but here is the prob

I am boosting to 30psi when im tuned for 25, then once i am about 25psi it flux's from 23-26 and doesn't hold. My car studders like it shuts off for a mere second and all my light's flicker when it happens. I thinking too much fuel running thru motor killing it or something like that.

Its a fully built engine with aem ems but hasnt been tuned in a long time but its slowly getting worse each time i get on it.

could it be waste gate spring? waste gate is good or maybe bad walbro? or just slowly losing my tune?

 

why didnt you just ditch the balance shafts on the built motor?

 

i bought the car the way it was and AMS didnt do the kit then so who knows