Quote:
Originally Posted by dragonbreath
I did some research about a restrictor but apparently the EFR turbo has a built in restrictor according to Borg Warner.
JSur, yep they are the EFR turbos.
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Any noticeable difference in return line length, slack, or routing complexity between pass and drivers side? Any difference in turbo mounting height or drain port orientation?
What size are the feed lines?
I am certain you already know this, but turbo gravity drains can be finicky so even a small adjustment could completely alleviate the problem.
edit: I just reread your post and you mention that the drain line levels out a little on the drivers side... you might consider taking some pics and sending to AAM to see if they have any ideas to adjust the routing? My drain lines also have very little downward slope, but seem to be OK.... even adjusting the drain so that you can get a few extra degrees of slope may solve it.
Have you gotten in touch with AAM and/or Borg Warner? Could be the result of a defect or failure as well.