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jwasbury jwasbury is offline
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Join Date: Jan 2008
Location: Weehawken, NJ
Posts: 3,384
Originally Posted by 9dreizig View Post
How is the stock boost guage tied into the overboost relay ?? I can see from the wiring diagram that it is but I'm not sure how..
The gauge and overboost sensor are not connected at all AFAIK. When I bought my car, I immediately noted that the overboost sensor was bypassed and the wire going to it was grounded out elsewhere (fixed it on the spot, my first DIY repair). I also tested the sensor by pressurizing it with a bicycle pump while checking it with an as advertised (cuts at 1.1-1.3 bar, hard to be more accurate with the equipment I used).

Wastegate failure could be the signal line as Brian says, or the diaphragm, or there could be too many springs inside (as was the case with my car).
Current: 1983 911 GT4 Race Car / 1999 Spec Miata / 2000 MB SL500 / 1998 MB E300TD / 1998 BMW R1100RT / 2016 KTM Duke 690
Past: 2009 997 Turbo Cab / 1979 930
Old 03-27-2010, 05:43 AM
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