hey everyone looking for some help as im out of ideas whats going on, just finished putting rebuilt GTR turbos on from lavish performance, got stepped gap piston rings, heavy duty thrust bearings and upgraded steel turbine wheels which are supposably higher flow, heres the specs:
Compressor AR-0.42 Inducer-42.0 Exducer-59.8
Turbine AR-0.48 Inducer-50.1 Exducer-37.5
i also installed new stainless manifolds, x force dump pipes and stainless front pipe, and braided oil and water lines for the turbos, already had cat back exhaust system and pod filters,i have a power fc for it but i havent intalled it yet as something is wrong, the car hasnt been tuned with this setup but it will not make 15psi untill 4700 rpm, actuators are fully closing have already checked they are preloaded, cannot hear a boost leak anywhere either, any help and ideas are appreciated, cheers, Glenn