My 2004 XC90 2.5T(T5) is making 9 PSI of boost, and 15 in Hg Vacuum. The waste gate actuator rod is adjusted out 4 turns. The Cat has been hollowed, and the missile looking muffler has been removed and 2.5" pipe put in it's place. The stock rear resonator or muffler which ever it is, still remains ...

Are the XC90's really that mysterious? I mean the XC90 does display the VOLVO insignia, and heck mine even has a T5 in it. The T5 appears to be a very popular engine, and there are a ton of upgrades for the T5 in other VOLVO models. So what the heck happened to the XC90 or am I jumping to ...

First of all I want to give Ya'll a big HOWDY from the Blue Ridge Mountains in Southwest Virginia, and second which hose should I tap into for a boost/vacuum gauge that I will be temporarily routing into the cab?