I have an 02 wrx and have been tracking down boost/vacuum leaks the last few weeks. On my stock boost gauge, boost would get up to about .8mPa max but was not stable and would fluctuate between wastegate pressure and .8mPa with noticeable fluctuations in power along with it.
Up to this point I have:
-verified the BCS is working correctly and cleaned out the lines from the turbo to BCS and the return to the inlet
-replaced just about every line in the boost control system except for the long one that goes through the firewall to the boost gauge
-replaced all three intercooler gaskets.
-made sure all connections are tight and I don't get any changes in idle when I spray ether around the connections on the inlet.
Now the gauge reads a steady .9mPa tapering to redline which is roughly 13 psi
I suspect the long line to the Boost gauge is leaking slightly but before I go to tear into my dash I would like to see what the MAP sensor is seeing to verify my suspicions. I'm up in Boulder and can travel a little if I need to but local would be ideal. I have Rom Raider but no Tactrix cable or Accesport so here is where you guys come in, help me data log and I'll buy you your favorite 6 pack. PM me if interested. Thanks for the help!