hi i have a 19912 r32 gtr that ive been having issues with ever since the day i bought it, im from canada and i posted on gtr canada and didn't get any responses, i searched for days on both forums and i couldn't find any help with my problem. so i did a compression test and all cylinders are 135-140psi range and i swopped out spark plugs and coil packs and checked power to my wiring harness and its all good, but theres a miss you can hear through the muffler, the car wont idle up over 4k and the boost wont go over 5psi, i changed ecus and checked mafs and they all good, im stuck and dont know what to do from here any input would be great thanks.