I have smoke tested it many times, including six times (but only the last three using their "bladder adapter" to perfectly seal the intake) with heavy smoke from my AutoLine Pro Smoke Machine Leak Tester – Shop Series - Automotive Smoke Tester for Vacuum Leak Detection - Car Smoke Machine with Ceramic Smoke Coil,..., and still didn't find leaks. And, I'll not spend $200 an hour for my local shop (not even a EURO shop), to smoke test for me...their prices are going thru the roof.

I have silicone vacuum lines and caps standing-by, to seal leaks, but none were found, also. I'm going to run a couple of bottles of Cataclean through the system, but haven't yet (I don't hear, smell, or feel signs of clogged cats...been there, done that on other cars), and I'll wait until I can drive a long distance at highway speeds before I use it (been busy at home, a lot).

I might just put the X5 on jackstands, and replace all the hoses , caps, and plugs, just because. Espcially those going under the truck, since I couldn't really see under there very well, when smoke-testing, and I previously had a question about fuel pressure regulation (if the vacuum line to the FPR is getting porous, then that MIGHT be the ONE).

In the meantime, anyone want to venture a guess on which wire to get the "switch", if I go ahead with my workaround plan?

__________________
01 BMW X5 E53,3.0i-5L40E, 7/13/01
topas-blau,Leder-grau,"resto-project car"

Here:
14 Lexus ES350,3.5L-U660E
09 HHR Panel,2.2L-4T45E
04 Chevy 2500HD,6.0L-4L80E
98 GMC Sierra 1500,5.7L-4L60E

Gone:
66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake
08 Cobalt Coupe,2.2L-4T45E
69 & 75 C10s,350c.i.-TH350
86 S10,2.8L-700R4
73 Volvo 142,2.0L-MT4
72 & 73 VW SuperBeetles,1.6l-MT4
64 VW,1.2l-MT4
67 Dodge Monaco 500 2dr ht.,383c.i.-A727
56 Chevy 210 4dr,265c.i.-PGlide