I need to do a vacuum reading to get a baseline so I can post what is a good reading on a 3.0 engine. To help determine what is a poor reading. All of these intake rubber parts are all failing now.

A common Vacuum gauge will show engine intake side, leaks as well as exhaust restriction issues. A combustion engine is nothing more than a air pump in - compress - exhaust. If there are leaks on the vacuum side (Intake low at idle and under load) Exhaust side show up under 2,000-3,000 RPM. A closed/crushed exhaust pipe/converter collapsed display normal vac at idle but drops off like a ROCK under load and RPM increases. Foxwell code reader will show misfires jumping all around cyl 3,4,5 under a snap acceleration test.

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2005 X5 4.8IS
The Blue ones are always FASTER....

Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green