Gday champ.My gtr has apexi intakes and n exhaust from standard dump pipes back.I was told about the restrictor but cant find it.I have stock turbos are u sure removing the restrictor will let it run 13 psi,cos i dont wanna blow my turbos up ay.Im poor n wanna make my car faster without damaging anything.Could u post pics or pm some pics to me of where this restrictor is.One more thing,who is ur tuner?