Hey guys.
im having issues with my twins when im WOT. The boost is jumping between 8-10psi and cant find why. Ive replaced all vac hoses, have a pfc tuned to 295rwhp with custom v mount, apexi intake and a greddy downpipe ceramic coated with catback but stock cat.
any help would be great

 

I'd first check for boost leaks...couplers etc.

----> Troubleshooting

 

Is 8-10 low? High? Are you running a electronic boost controller? If so, is the boost controller limiting boost? Causing the boost to rise and fall

 

Havnt found any leaks yet.
its jumping around after 5-7rpm. Transition is fine and low boost if fine. Just the pfc controling boost which is tuned to 10psi