pls some help
 

i have a type r rx7 ihave apexi power fc,3mm,blades,fuel rail,injectors1600cc,hks fuel regulator,full hks stainless steel exhauxt,but im still runnig on standart turbos and i have only 11psi boost. can some tell me how much can i give boost for this engine pls 10q

A frind of mine have something like you exept the fuel rail and 1600 cc injectors he have front mount intercooler the rdiator is vertically and full repair inside engine but with the original turbines and he is runing them at 15psi because he dont have more gass so I think you can try the 15 psi

get a Wide Band! you have 3mm seals so i really wouldn't do allot of pounds. I'm guessing your running twins no sequential I think the most you can get out of it is 12 psi. Go single and 2mm