Quote:
Originally Posted by N55bmwTech
Use a mirror and check for a broken niple on the bottom of vacuum res. Pinched / kinked lines routed by the coolant bottle. Assuming it's a n54.
Are you modded?
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Thanks for the thoughts. No broken nipples as far as I can tell. Definitely an N54 - only a tune for modifications. This may change if I end up doing turbos
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I did do a little more testing this weekend. I pressurized the system to about 5 - 7 psi and looked for leaks. When I did so, I heard a large rush of air from the area of the turbos. Such a fun area to search for a leak... It does appear to be coming from the rear turbo - but not sure where. I recorded a quick video if anyone is interested. I put the phone where I could actually feel the air rushing out.
https://drive.google.com/file/d/0B5d...ew?usp=sharing
Suggestions welcome