Hey guys, I have a 92 r32 gtst still rb20det and it’s having some problems. When I push in the clutch after steady going or stopping the rpms die. I pulled the maf and the car surges, I pulled all of the intercooler piping and couplers and reinstalled to make sure there was no leak. But when I unscrew the clamp on the pipe coming off the turbo the rpms go up. And it’s defintely lacking the power it used to have. Does anybody have any ideas?